Jewelry, gemstone settings, and methods for manufacturing jewelry

Abstract

We provide settings and jewelry that can hold gemstones regardless of variations in their size. [Solution] The jewelry comprises a gemstone having a crown, girdle, and pavilion formed on it; a housing portion that houses at least a portion of the culet side of the gemstone's pavilion; a support portion that protrudes from the inner surface of the housing portion inside the housing portion and supports a portion of the gemstone's pavilion in the circumferential direction; a first pressing portion provided on the opposite side of the support portion with the gemstone in between, which presses the gemstone toward the support portion; and a second pressing portion provided at a different position from the first pressing portion in the circumferential direction of the gemstone, which presses the gemstone toward the support portion.

Description

Technical Field

[0001] The present invention relates to ornaments, pedestals for gemstones, and methods for manufacturing ornaments.

Background Art

[0002] In Patent Document 1, there is described a gemstone holder for holding a faceted gemstone having a crown which is the side surface of a truncated conical portion and a table which is the truncated surface of the truncated conical portion, a pavilion which is the side surface of a lower conical portion and a culet which is the apex of the lower conical portion, and a girdle in the circumferential portion between the crown and the pavilion. The gemstone holder has a claw portion that abuts against the crown, an abutting portion that is integrally formed with the claw portion and abuts against the pavilion, and a support seat that is integrally formed with the abutting portion and into which the culet is inserted. In a seat hole formed substantially at the center of the support seat, a contact surface that contacts the pavilion is formed on the surface facing the claw portion, and a technique for sandwiching the gemstone between the claw portion and the contact surface is described.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, although gemstones are processed according to a predetermined size, there may be a tolerance in the actual size due to processing accuracy and the like. Therefore, even when a pedestal corresponding to a gemstone of a predetermined size is prepared, there is a possibility that the holding of the gemstone becomes insufficient depending on the actual size of the gemstone. An object of the present invention is to provide a pedestal and an ornament that can hold a gemstone regardless of the variation in the size of the gemstone.

Means for Solving the Problems

[0005] To this end, the technology disclosed herein is a jewelry comprising: a gemstone having a crown, girdle, and pavilion formed thereon; a housing portion for housing at least a portion of the culet side of the pavilion of the gemstone; a support portion inside the housing portion, protruding from the inner surface of the housing portion and supporting a portion of the pavilion of the gemstone in the circumferential direction; a first pressing portion provided on the opposite side of the support portion with respect to the gemstone, for pressing the gemstone toward the support portion; and a second pressing portion provided at a different position in the circumferential direction of the gemstone from the first pressing portion, for pressing the gemstone toward the support portion.

[0006] Here, the first pressing portion and the second pressing portion each have a connecting portion for connecting an attachment member used by the user when putting the ornament around their neck, and the support portion is preferably provided below the connecting portion when the user is wearing the ornament around their neck. Furthermore, the housing section may have a covering portion that covers the culet side of the pavilion. Furthermore, the covering portion may have a flat portion that is formed in a planar shape opposite to the side facing the culet. Furthermore, the first pressing portion and the second pressing portion may extend from the outside of the gemstone toward the center, along the crown of the gemstone. Furthermore, the first pressing portion and the second pressing portion may have a bent portion that grips the girdle of the gemstone. Furthermore, the support portion is preferably provided in the region where, with the gemstone facing forward, the region on the side where the second pressing portion is not located, with the boundary being a first imaginary line passing through the first pressing portion and along the longitudinal direction of the first pressing portion, and the region on the side where the first pressing portion is not located, with the boundary being a second imaginary line passing through the second pressing portion and along the longitudinal direction of the second pressing portion, overlap. Furthermore, the support portion may have an arc-shaped portion that is provided opposite the pavilion. Furthermore, the gemstone is cut in a round brilliant cut, the housing is formed in a circular shape with the gemstone facing forward, and the angle between the line passing through the center of the housing and one end of the arc and the line passing through the center and the other end of the arc is preferably 45 degrees or more and less than 135 degrees. Furthermore, the support portion may have a recess into which the protrusions formed by the facets of the pavilion fit. Furthermore, the support portion may have a V-shaped section that is provided opposite the pavilion and formed in a V-shape. Furthermore, the support portion may have a plurality of V-shaped portions arranged in the circumferential direction of the gemstone.

[0007] Furthermore, for the purposes thereof, the technology disclosed herein includes a gemstone on which a crown, girdle, and pavilion are formed; a receptacle formed in a circular shape and accommodating at least a portion of the culet side of the pavilion of the gemstone, with the gemstone facing forward; a support portion formed in an arc shape, protruding from the inner surface of the receptacle and supporting a portion of the pavilion of the gemstone in the circumferential direction; a first pressing portion provided on the opposite side of the support portion with the gemstone in between, and pressing the gemstone toward the support portion; and the gemstone The jewelry comprises: a second pressing portion provided in a position different from the first pressing portion in the circumferential direction of the stone, which presses the gemstone toward the support portion; a first connecting portion provided above the support portion when the jewelry is worn by the user, to which an attachment member used when the user puts on the jewelry is connected; a second connecting portion provided above the support portion when the jewelry is worn by the user, to which the attachment member is connected; and a planar portion provided on the side of the housing portion opposite to the side in which the gemstone is housed, which is formed in a planar shape.

[0008] Furthermore, for the purposes described herein, the technology disclosed herein is a gemstone base comprising: a housing portion that houses at least a portion of the culet side of the pavilion of a gemstone on which a crown, girdle, and pavilion are formed; a support portion that protrudes from the inner surface of the housing portion inside the housing portion and is capable of supporting a portion of the pavilion of the gemstone in the circumferential direction; a first pressing portion provided on the opposite side of the support portion with the gemstone in between, and capable of pressing the gemstone toward the support portion; and a second pressing portion provided at a different position from the first pressing portion in the circumferential direction of the gemstone, and capable of pressing the gemstone toward the support portion.

[0009] Furthermore, for the purposes described herein, the technology disclosed herein is a method for manufacturing a jewelry, comprising the steps of: placing a gemstone on a support portion that supports a portion of the pavilion in the circumferential direction of the gemstone, on which a crown, girdle, and pavilion are formed; bending a first pressing portion provided on the opposite side of the support portion from the gemstone to press the gemstone toward the support portion; and bending a second pressing portion provided at a different position from the first pressing portion in the circumferential direction of the gemstone to press the gemstone toward the support portion. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a base or jewelry that can hold gemstones regardless of variations in their size. [Brief explanation of the drawing]

[0011] [Figure 1] (A) and (B) are overall views of the ornament according to the first embodiment. [Figure 2] (A), (B), and (C) are explanatory diagrams of gemstones according to the first embodiment. [Figure 3] This is a partial cross-sectional view of the ornament according to the first embodiment. [Figure 4] This is an overall perspective view of the base of the first embodiment. [Figure 5] This is a cross-sectional view of the base of the first embodiment. [Figure 6](A) and (B) are explanatory views of the arrangement of members in the pedestal of the first embodiment. [Figure 7] (A) and (B) are views showing the contact state between the support portion of the pedestal and the gemstone in the first embodiment. END]] [Figure 8] (A) and (B) are explanatory views of the pedestal of the jewelry in the second embodiment. [Figure 9] (A) and (B) are views showing the contact state between the support portion of the pedestal and the gemstone in the second embodiment. [Figure 10] (A) and (B) are views showing another contact state between the support portion of the pedestal and the gemstone in the second embodiment. [Figure 11] (A) and (B) are explanatory views of the pedestal of the jewelry in the third embodiment. [Figure 12] (A) and (B) are views showing the contact state between the support portion of the pedestal and the gemstone in the third embodiment.

Mode for Carrying Out the Invention

[0012] Hereinafter, this embodiment will be described with reference to the accompanying drawings. <First Embodiment> FIG. 1 is an overall view of the jewelry 1 of the first embodiment. Note that FIG. 1(A) is an overall view of the jewelry 1 seen from the front, and FIG. 1(B) is an overall view of the jewelry 1 seen from the side.

[0013] As shown in FIGS. 1(A) and 1(B), the jewelry 1 of this embodiment includes a gemstone 90 such as a diamond and a pedestal 10 to which the gemstone 90 is attached. The gemstone 90 is not limited to a diamond, and various gemstones such as sapphires can be used. Also, various metals such as platinum, silver, and gold can be used for the pedestal 10 of this embodiment.

[0014] Furthermore, in this embodiment, the jewelry 1 has a metal chain threaded through the first ring portion 14, etc., which will be described later, and is used as a necklace that is worn around the neck of the user who wears the jewelry 1. As shown in Figure 1(A), when the user wears the jewelry 1, the crown 91 (table facet 911) of the gemstone 90, which will be described later, faces forward.

[0015] As shown in Figure 1(B), the base 10 has a first arm portion 11 formed in the shape of an arm to hold the gemstone 90, a second arm portion 12 formed in the shape of an arm to hold the gemstone 90, and a housing portion 13 in which a part of the gemstone 90 is housed. The base 10 holds the gemstone 90 with the first arm portion 11, the second arm portion 12, and the housing portion 13.

[0016] Here, the gemstone 90 provided on the base 10 of this embodiment will be described in detail. Figure 2 is an explanatory diagram of the gemstone 90 of the first embodiment. Figure 2(A) is a side view of the gemstone 90, Figure 2(B) is a top view of the gemstone 90, and Figure 2(C) is a bottom view of the gemstone 90.

[0017] The gemstone 90 shown in Figures 2(A) to 2(C) is a cut called a round brilliant cut.

[0018] As shown in Figure 2(A), the gemstone 90 has a crown 91 formed on the upper side in the drawing, a pavilion 95 formed on the lower side in the drawing, and a girdle 93 provided between the crown 91 and the pavilion 95. The crown 91 is formed in the shape of a frustocone and is trapezoidal when viewed from the side. The pavilion 95 is formed in the shape of a cone and is triangular when viewed from the side. The girdle 93 is formed in the shape of a disc and is rectangular when viewed from the side.

[0019] In this embodiment, the direction in which the crown 91, girdle 93, and pavilion 95 are aligned (the vertical direction in Figure 2(A)) is referred to as the vertical direction of the gemstone 90. Also, when viewing the gemstone 90 from the front or bottom, the central side of the circularly formed gemstone 90 is called the center, and the direction away from the center is called the outward direction. Furthermore, the direction between the center and the outward direction of the gemstone 90 is called the radial direction. In addition, with respect to the base 10 on which the gemstone 90 is attached, the direction corresponding to the vertical direction of the gemstone 90 is referred to as the vertical direction, and the direction corresponding to the radial direction of the gemstone 90 is referred to as the radial direction in this explanation.

[0020] As shown in Figures 2(B) and 2(C), the gemstone 90 is formed in a circular shape when viewed from the front or bottom. And, as shown in Figure 2(B), the crown 91 has a table facet 911, a star facet 912, a bezel facet 913, and an upper girdle facet 914.

[0021] The table facet 911 is formed at the upper end of the gemstone 90 in the vertical direction, on the central side of the crown 91. The table facet 911 is a face that is approximately perpendicular to the vertical direction. That is, the table facet 911 is a face that is perpendicular to the vertical direction. The table facet 911 is formed in an octagonal shape. The number of faces of the table facet 911 is one.

[0022] The star facet 912 is a face adjacent to the table facet 911. The star facet 912 is formed in a triangular shape. The star facet 912 is an inclined face that faces upward in the vertical direction. The number of star facets 912 is 8. These are the bezel facets 913 and the faces adjacent to the two star facets 912. The bezel facets 913 are formed in a square shape. The bezel facets 913 are inclined faces that face upward in the vertical direction. The number of star facets 912 is eight. The upper girdle facet 914 is a face adjacent to the bezel facet 913. The upper girdle facet 914 is formed in a fan shape. The upper girdle facet 914 is an inclined surface facing upward in the vertical direction. The upper girdle facet 914 has 16 faces.

[0023] Furthermore, as shown in Figure 2(C), the pavilion 95 has a lower guardl facet 951, a pavilion facet 952, and a culet 953.

[0024] The lower girdle facet 951 is a surface formed in a fan shape. The lower girdle facet 951 is an inclined surface that faces downward in the vertical direction. A triangular pyramidal shape is formed in the pavilion 95 by two adjacent lower girdle facets 951. Here, a pair of lower girdle facets 951 composed of two adjacent lower girdle facets 951 is called a "convex facet 951P". The convex facet 951P is formed in a mountain shape and has a ridge-like straight line that protrudes downward in the vertical direction.

[0025] The pavilion facet 952 is a surface formed in a rhombic shape. The pavilion facet 952 is positioned sandwiched between one convex facet 951P and another convex facet 951P.

[0026] The culet 953 is located at the lower end of the pavilion 95. The culet 953 forms the apex of the cone-shaped pavilion 95. The culet 953 is also located at the center of the gemstone 90 when viewed from the bottom.

[0027] The jewelry 1 of this embodiment comprises a gemstone 90 on which a crown 91, girdle 93, and pavilion 95 are formed; a housing portion 13 that houses at least a portion of the pavilion 95 of the gemstone 90 on the culet 953 side; a support portion 17 that protrudes from the inner surface of the housing portion 13 inside the housing portion 13 and supports a portion of the pavilion 95 of the gemstone 90 in the circumferential direction; a first arm portion 11 provided on the opposite side of the support portion 17 with the gemstone 90 in between, and that presses the gemstone 90 toward the support portion 17; and a second arm portion 12 provided at a different position from the first arm portion 11 in the circumferential direction of the gemstone 90, and that presses the gemstone 90 toward the support portion 17. The jewelry 1 of this embodiment will now be described in detail.

[0028] As shown in Figure 1(B), the first arm portion 11 is provided along the vertical direction of the gemstone 90. The first arm portion 11 has an L-shape. One end of the first arm portion 11 is connected to the housing portion 13, and the other end is in contact with the gemstone 90. The first arm portion 11 in this embodiment has a first support portion 11P provided on the housing portion 13 side and a first claw portion 11N provided on the gemstone 90 side. The first support portion 11P and the first claw portion 11N are continuous via a bent portion 11B. The first support portion 11P is inclined in a direction away from the outside of the base 10, following the outer shape of the gemstone 90 (pavilion 95, described later). The first claw portion 11N is inclined in a direction towards the inside of the base 10, following the outer shape of the gemstone 90 (crown 91, described later).

[0029] Figure 3 is a partial cross-sectional view of the ornament 1 of the first embodiment.

[0030] As shown in Figure 3, the first support portion 11P faces the pavilion 95 of the gemstone 90. In this embodiment, the first support portion 11P is formed so as not to come into contact with the pavilion 95, except in the vicinity of the girdle 93. A gap is formed between the first support portion 11P and the pavilion 95.

[0031] The first prong portion 11N faces the crown 91 of the gemstone 90. The first prong portion 11N extends from the outside of the gemstone 90 toward the center. The first prong portion 11N is provided along the surface of the crown 91 (star facet 912, bezel facet 913, and upper girdle facet 914). In this embodiment, the first prong portion 11N does not extend to the table facet 911, but extends from the outside toward the center, up to just before the table facet 911 (see Figure 1(A)).

[0032] The bent portion 11B faces the girdle 93. The bent portion 11B then clamps the girdle 93. This determines the position of the gemstone 90 in the vertical direction and the radial direction on the first arm portion 11. The same applies to the bent portion 12B of the second arm portion 12, which will be described later.

[0033] As shown in Figures 1(A) and 1(B), the basic configuration of the second arm 12 is the same as that of the first arm 11. In this embodiment, the second arm 12 is positioned away from the first arm 11 in the circumferential direction of the gemstone 90. In this embodiment, when the center C of the housing section 13 (the culet 953 of the gemstone 90), which will be described later, is the center of rotation, the first arm 11 and the second arm 12 are positioned apart at a predetermined angle θ0 (see Figure 6(A), which will be described later). The angle θ0 formed by the first arm 11 and the second arm 12 is preferably greater than 90 degrees and less than 180 degrees. In this embodiment, the angle θ0 formed by the first arm 11 and the second arm 12 is set to 125 degrees. The second arm 12 holds the gemstone 90 together with the first arm 11.

[0034] As shown in Figure 1(B), the second arm portion 12 is provided along the vertical direction of the gemstone 90. The second arm portion 12 has an L-shape. One end of the second arm portion 12 is connected to the housing portion 13, and the other end contacts the gemstone 90. In this embodiment, the second arm portion 12 has a second support portion 12P provided on the housing portion 13 side and a second claw portion 12N provided on the gemstone 90 side. The second support portion 12P and the second claw portion 12N are continuous via a bent portion 12B. The second support portion 12P is inclined in a direction away from the outside of the base 10, following the outer shape of the gemstone 90 (pavilion 95, described later). The second claw portion 12N is inclined in a direction towards the inside of the base 10, following the outer shape of the gemstone 90 (crown 91, described later).

[0035] A first ring portion 14 is provided on the first arm portion 11. In this embodiment, the first ring portion 14 is attached to the first support portion 11P. A second ring portion 15 is also provided on the first arm portion 11. In this embodiment, the second ring portion 15 is attached to the first support portion 11P. A chain, for example, made of metal, is connected to the first ring portion 14 and the second ring portion 15. The ornament 1 of this embodiment is then worn around the user's neck via the chain.

[0036] Figure 4 is an overall perspective view of the base 10 of the first embodiment. Figure 5 is a cross-sectional view of the base 10 of the first embodiment. Note that the cross-section shown in Figure 5 is the cross-section obtained when the base 10 is cut along a plane that passes through the support portion 17, which will be described later.

[0037] As shown in Figure 4, the housing portion 13 is formed in a bottomed cylindrical shape overall. A recessed area 13H is provided inside the housing portion 13. The recessed area 13H is formed such that its inner diameter gradually decreases from the top to the bottom in the vertical direction. The housing portion 13 also has a side wall 13S surrounding it in the circumferential direction. The side wall 13S is formed such that its outer diameter gradually decreases from the top to the bottom in the vertical direction.

[0038] As shown in Figure 5, the thickness of the housing section 13 in this embodiment is formed to increase from the top to the bottom. The base 10 in this embodiment is connected to the first arm section 11 and the second arm section 12 at the bottom in the vertical direction. The base 10 also has a support section 17, which will be described later, inside the recess 13H. Therefore, the housing section 13 in this embodiment has increased strength on the lower side by making the lower side thicker than the upper side.

[0039] Furthermore, the housing portion 13 of this embodiment is configured so as not to come into contact with the jewel 90, except for the support portion 17. When the jewel 90 is inserted inside the housing portion 13, a gap (clearance) is formed between the upper end portion 131a in the vertical direction and the jewel 90.

[0040] The storage section 13 has a bottom surface 13B on its lower side in the vertical direction. Furthermore, the bottom surface 13B has a planar surface 131 on its outer side. The surface 131 constitutes the lower end of the base 10 in the vertical direction in this embodiment. In this embodiment, the surface 131 is formed substantially parallel to the surface of the table facet 911 of the gemstone 90. In this embodiment, the base 10 has the surface 131 at its lower end so that when the user wears the jewelry 1, the surface 131 is in contact with the user's skin or clothing parallel to it, causing the gemstone 90 to face forward.

[0041] The base portion 13B has a dome surface 132 formed in a hemispherical dome shape on its inner side. The dome surface 132 of the base portion 13B faces the pavilion 95 and covers the culet 953 side. The base 10 of this embodiment can reflect light toward the gemstone 90 due to the metallic luster of the surface of the dome surface 132. As a result, the base 10 of this embodiment makes the gemstone 90 appear to shine more brightly.

[0042] Furthermore, the housing section 13 has a support section 17 on its inside. The support section 17 is provided in the recess 13H of the housing section 13 and protrudes from the recess 13H toward the center. The support section 17 is also formed in an arc shape. Moreover, in this embodiment, the support section 17 is provided at approximately the halfway point in the vertical direction of the housing section 13. The support section 17 in this embodiment contacts a portion of the pavilion 95 of the gemstone 90 in the circumferential direction. The support section 17 partially supports the gemstone 90.

[0043] Figure 6 is an explanatory diagram of the arrangement of components in the base 10 of the first embodiment.

[0044] Here, as shown in Figure 6(A), the center C of the circularly shaped housing section 13 is used as the reference point. The center C corresponds to the position of the culet 953 of the gemstone 90 (see Figure 5). The straight line along the longitudinal direction of the first arm section 11 is defined as the first imaginary line L1. The straight line along the longitudinal direction of the second arm section 12 is defined as the second imaginary line L2. In the base 10 of this embodiment, the intersection point I of the first imaginary line L1 and the second imaginary line L2 corresponds to the position of the center C of the housing section 13. The first arm section 11 and the second arm section 12 of this embodiment are provided so as to face the center C of the housing section 13, respectively.

[0045] The support portion 17 is provided on the opposite side of the first arm portion 11 and the second arm portion 12, with the center C of the housing portion 13 in between, when viewing the base 10 from above and below. More specifically, the first arm portion 11, the second arm portion 12, and the support portion 17 are each positioned at the vertices of a triangle. This arrangement ensures that the support portion 17 receives the resultant force of the forces applied to the gemstone 90 by the first arm portion 11 and the second arm portion 12. In this embodiment, the support portion 17 is located in the region where the area on the side where the second arm portion 12 is not provided, with the first imaginary line L1 as the boundary, and the area on the side where the first arm portion 11 is not provided, with the second imaginary line L2 as the boundary, overlap.

[0046] As shown in Figure 6(B), the support portion 17 is formed in an annular fan shape, which is the shape of a ring cut into a fan shape. The support portion 17 has an arc portion 171, which is an arc-shaped surface formed on the side facing the first arm portion 11 and the second arm portion 12. The support portion 17 faces the pavilion 95 of the gemstone 90 when the gemstone 90 is attached to the base 10. The support portion 17 also has one end portion 17a at one end in the direction along the arc and the other end portion 17b at the other end.

[0047] The angle θ1 formed by the straight line passing through the center C of the housing portion 13 and one end 17a, and the straight line passing through the center C of the housing portion 13 and the other end 17b, is set to 125 degrees. This corresponds to the angle θ0 formed by the first arm portion 11 and the second arm portion 12. The angle of the support portion 17 is preferably 45 degrees or more and less than 135 degrees.

[0048] Here, in pavilion 95, the convex facets 951P are arranged at 45-degree intervals in the circumferential direction. Therefore, the arc portion 171 has an angle of 45 degrees or more and less than 135 degrees, making it possible to support two or three convex facets 951P. Furthermore, if the angle of the support portion 17 is less than 45 degrees, the support portion 17 will only support one convex facet 951P, making it easier for the gemstone 90 to rotate in the circumferential direction, for example. On the other hand, if the angle of the support portion 17 is 135 degrees or more, it will support all four convex facets 951P, which may make the support itself unstable.

[0049] The first arm portion 11 and the second arm portion 12 have a first ring portion 14 and a second ring portion 15 to which attachment members such as a chain used by the user when hanging the jewelry 1 around their neck are connected. The support portion 17 of this embodiment is provided below the first ring portion 14 and the second ring portion 15 when the user is wearing the jewelry 1. As a result, the jewelry 1 of this embodiment is suspended around the user's neck by a chain connected to the first ring portion 14 and the second ring portion 15. At this time, the support portion 17 provided below the first ring portion 14 and the second ring portion 15 positions the center of gravity of the jewelry 1 lower, thereby stabilizing the position of the gemstone 90.

[0050] Next, we will explain the manufacturing method of the jewelry 1. Specifically, we will explain in detail how the gemstone 90 is held by the base 10. Figure 7 shows the contact state between the support portion 17 of the base 10 and the gemstone 90 in the first embodiment.

[0051] Prepare a base 10 (see Figure 4) with the structure described above. In this case, the first claw portion 11N of the first arm portion 11 and the second claw portion 12N of the second arm portion 12 of the base 10 are spaced further apart from each other compared to when the gemstone 90 is held.

[0052] Then, the pavilion 95 side of the gemstone 90 is inserted into the housing portion 13 of the base 10. The support portion 17 supports a portion of the pavilion 95 in the circumferential direction (see Figure 5). More specifically, as shown in Figure 7(A), the convex facets 951P of the pavilion 95 face the arc portion 171 of the support portion 17. In the base 10 of this embodiment, three convex facets 951P are supported by the support portion 17. The convex facets 951P of the gemstone 90 in this embodiment are arranged at 45-degree intervals in the circumferential direction. On the other hand, the arc portion 171 of this embodiment forms an angle θ1 of 125 degrees (see Figure 6(B)). Therefore, the arc portion 171 of this embodiment can contact the three convex facets 951P regardless of the rotation angle of the gemstone 90 in the circumferential direction (points S1, S2, and S3).

[0053] As shown in Figure 7(B), the support portion 17 of this embodiment provides stable support to the gemstone 90 by supporting it at three points relative to the pavilion 95. In other words, if the support portion 17 were to provide contact support at four or more points, the support of the gemstone 90 might become unstable. Therefore, the support portion 17 of this embodiment is designed to provide contact support at three points or less.

[0054] Subsequently, the first claw portion 11N and the second claw portion 12N are bent to conform to the surface of the crown 91 of the gemstone 90. This causes the first arm portion 11 and the second arm portion 12 to press the gemstone 90 toward the support portion 17. At this time, the first arm portion 11 and the second arm portion 12, together with the support portion 17, determine the position of the gemstone 90 in both the vertical and radial directions. In this way, the base 10 of this embodiment holds the gemstone 90 with the first arm portion 11, the second arm portion 12 and the support portion 17.

[0055] In the jewelry 1 of this embodiment, as described above, the gemstone 90 is pressed against the support part 17 by the first arm part 11 and the second arm part 12. At this time, the support part 17 partially supports the pavilion 95 of the gemstone 90. This makes it possible for the jewelry 1 of this embodiment to stably hold the gemstone 90. Because the gemstone 90 is processed into a predetermined shape, tolerances may occur from the predetermined ideal size. On the other hand, the base 10 that holds the gemstone 90 is designed assuming a predetermined ideal size of the gemstone 90. Here, for example, if the entire circumferential direction of the pavilion 95 of the gemstone 90 is supported, there is a risk that the gemstone 90 cannot be supported if its size differs from the ideal size. In contrast, in the jewelry 1 of this embodiment, the base 10 can stably hold the gemstone 90.

[0056] <Second Embodiment> Next, we will describe the ornament 2 to which the second embodiment is applied. In the description of the second embodiment, components similar to those in the first embodiment are denoted by the same reference numerals, and their detailed descriptions are omitted.

[0057] Figure 8 is an explanatory diagram of the base 20 of the ornament 2 in the second embodiment.

[0058] As shown in Figure 8(A), the ornament 2 of the second embodiment has a gemstone 90 (see Figure 2) and a base 20. The base 20 has a first arm portion 11, a second arm portion 12, a housing portion 23, a first ring portion 14, and a second ring portion 15. The basic configuration of the housing portion 33 is the same as that of the housing portion 13 of the first embodiment. However, the structure of the support portion 27 of the housing portion 23 of the second embodiment differs from that of the support portion 17 of the first embodiment.

[0059] The support portion 27 is provided on the opposite side of the first arm portion 11 and the second arm portion 12, with the center C of the housing portion 23 in between, when viewing the base 10 from above and below. More specifically, the first arm portion 11, the second arm portion 12, and the support portion 27 are each positioned at the vertices of a triangle. In this way, the support portion 27 is positioned to receive the resultant force of the forces applied by the first arm portion 11 and the second arm portion 12 to the jewel 90. In this embodiment, the support portion 27 is provided in the region where the area on the side where the second arm portion 12 is not provided, with the first imaginary line L1 as the boundary, and the area on the side where the first arm portion 11 is not provided, with the second imaginary line L2 as the boundary, overlap.

[0060] As shown in Figure 8(B), the general shape of the support portion 27 is formed in an annular fan shape, which is the shape of a ring cut into a fan shape. The support portion 27 has a first straight portion 271 and a second straight portion 272 on the side facing the first arm portion 11 and the second arm portion 12. The first straight portion 271 and the second straight portion 272 constitute a valley portion 27V formed in a V shape. The angle θ2 formed by the first straight portion 271 and the second straight portion 272 is set to 125 degrees. The angle θ2 formed by the first straight portion 271 and the second straight portion 272 is set to be greater than the angle formed by the convex facet 951P.

[0061] Furthermore, the support portion 27 has one end 27a at one end in the direction along the arc and the other end 27b at the other end. In this embodiment, the angle θ3 formed by the one end 27a and the other end 27b of the support portion 27 is set to 70 degrees. In this embodiment, the angle θ3 formed by the one end 27a and the other end 27b of the support portion 27 is set to be greater than 45 degrees, which is the distance between the two convex facets 951P, and less than 90 degrees, which is the distance between the three convex facets 951P.

[0062] Figure 9 shows the contact state between the support portion 27 of the base 20 and the gemstone 90 in the second embodiment.

[0063] As shown in Figure 9(A), the support portion 27 of the housing portion 23 in the second embodiment supports a portion of the pavilion 95 in the circumferential direction. More specifically, one convex facet 951P of the pavilion 95 faces the valley portion 27V of the support portion 27 (point S1). Then, as shown in Figure 9(B), in the base 20 of the second embodiment, one convex facet 951P is supported by the support portion 27. In this way, in the second embodiment, the convex facet 951P fits into the support portion 27. In the jewelry 2 of the second embodiment, the gemstone 90 is supported in the vertical direction and its position in the circumferential direction is also fixed.

[0064] Furthermore, the base 20 of the second embodiment can take on other contact states depending on the mounting angle of the gemstone 90. Figure 10 shows another contact state between the support portion 27 of the base 20 and the gemstone 90 in the second embodiment.

[0065] As shown in Figure 10(A), the support portion 27 supports a portion of the pavilion 95 in the circumferential direction. More specifically, the convex facets 951P of the pavilion 95 face the first straight portion 271 and the second straight portion 272 of the support portion 27, respectively. Then, as shown in Figure 10(B), in the base 20 of the second embodiment, two convex facets 951P are supported by the support portion 27 (points S2 and S3). Thus, in the second embodiment, the support portion 27 can come into contact with either one convex facet 951P (see Figure 10) or two convex facets 951P, regardless of the rotation angle of the gemstone 90 in the circumferential direction. In the second embodiment, the jewelry 2 contacts a portion of the circumferential direction of the pavilion 95 of the gemstone 90 and partially supports the pavilion 95. The jewelry 2 then enables the stable holding of the gemstone 90.

[0066] <Third Embodiment> Next, we will describe the ornament 3 to which the third embodiment is applied. In the description of the third embodiment, components similar to those in the first embodiment are denoted by the same reference numerals, and their detailed descriptions are omitted.

[0067] Figure 11 is an explanatory diagram of the base 30 of the ornament 3 in the third embodiment.

[0068] The ornament 3 of the third embodiment has a gemstone 90 (see Figure 2) and a base 30. As shown in Figure 11(A), the base 30 has a first arm portion 11, a second arm portion 12, a housing portion 33, a first ring portion 14, and a second ring portion 15. The basic configuration of the housing portion 33 is the same as that of the housing portion 13 of the first embodiment. However, the structure of the support portion 37 of the housing portion 33 of the third embodiment differs from that of the support portion 17 of the first embodiment.

[0069] The support portion 37 is provided on the opposite side of the first arm portion 11 and the second arm portion 12, with the center C of the housing portion 33 in between, when viewing the base 10 from above and below. More specifically, the first arm portion 11, the second arm portion 12, and the support portion 37 are each positioned at the vertices of a triangle. This arrangement ensures that the support portion 37 receives the resultant force of the forces applied by the first arm portion 11 and the second arm portion 12 to the jewel 90. In this embodiment, the support portion 37 is located in the region where the area on the side where the second arm portion 12 is not provided, with the first imaginary line L1 as the boundary, and the area on the side where the first arm portion 11 is not provided, with the second imaginary line L2 as the boundary, overlap.

[0070] As shown in Figure 11(B), the general shape of the support portion 37 is formed in an annular fan shape, which is the shape of a ring cut into a fan shape. The support portion 37 forms multiple valleys 37V that are formed in a V shape by multiple linear portions. More specifically, the valleys 37V of the support portion 37 in the third embodiment have a first valley 37V1, a second valley 37V2, and a third valley 37V3. These first valleys 37V1, second valleys 37V2, and third valleys 37V3 are aligned in the circumferential direction of the gemstone 90. In addition, the angle θ4 formed by each valley 27V is set to be greater than the angle of the convex facet 951P.

[0071] Furthermore, the support portion 37 has one end 37a at one end in the direction along the arc and the other end 37b at the other end. The angle θ5 formed by the one end 37a and the other end 37b of the support portion 37 in this embodiment is set to 120 degrees. The angle θ5 formed by the one end 37a and the other end 37b of the support portion 37 in this embodiment is set to be 90 degrees or more, which is the distance between the three convex facets 951P, and less than 135 degrees, which is the distance between the four convex facets 951P.

[0072] Figure 12 shows the contact state between the support portion 37 of the base 30 and the gemstone 90 in the third embodiment.

[0073] As shown in Figure 12(A), the support portion 37 of the housing portion 33 in the third embodiment supports a portion of the pavilion 95 in the circumferential direction. More specifically, the convex facet 951P of the pavilion 95 faces one of the valleys of the support portion 37. Then, as shown in Figure 12(B), in the base 20 of the second embodiment, for example, one convex facet 951P is supported by the second valley 37V2. In this way, in the third embodiment, the convex facet 951P fits into the support portion 27. Then, in the ornament 3 of the third embodiment, the gemstone 90 is supported in the vertical direction and its position in the circumferential direction is also fixed.

[0074] Although Figure 12 shows an example where the convex facet 951P fits into the second valley 37V2, the embodiment is not limited to this. Depending on the rotation angle of the gemstone 90 in the circumferential direction when the gemstone 90 is attached to the base 30, the convex facet 951P can also fit into, for example, the first valley 37V1 or the third valley 37V3.

[0075] Furthermore, in the third embodiment, the ornament 3 contacts a portion of the circumferential direction of the pavilion 95 of the gemstone 90, and partially supports the pavilion 95 of the gemstone 90. Thus, the ornament 3 enables the gemstone 90 to be held stably.

[0076] (modified version) In the embodiment described above, a gemstone 90 that is circular when viewed from the front and triangular when viewed from the side is used as an example, but the invention is not limited to this example. For example, the gemstone 90 may be elliptical or rectangular when viewed from the front. In this case as well, by partially supporting the gemstone 90 with the support parts (support parts 17, 27, and 37) together with the first arm part 11 and the second arm part 12, the gemstone 90 can be held stably regardless of variations in the size of the gemstone 90.

[0077] In the embodiment described above, for example, the jewelry 1 is used as a necklace connected to a chain or the like and worn around the user's neck, but it is not limited to this. The structure of the embodiment described above can also be applied to a ring worn on the user's finger, for example. In this case, a ring member for wearing on the finger can be attached in place of the first ring portion 14 and the second ring portion 15 of the base 10.

[0078] Here, ornament 1 is an example of an ornament. Housing section 13, housing section 23 and housing section 33 are examples of housing sections. First arm section 11 is an example of a first pressing section. Second arm section 12 is an example of a second pressing section. Support section 17, support section 27 and support section 37 are examples of support sections. First annular section 14 and second annular section 15 are examples of a connecting section, first connecting section, or second connecting section. Dome surface 132 is an example of a covering section. Plane 131 is an example of a plane section. Bent section 11B and bent section 12B are examples of bent sections. Arc section 171 is an example of an arc section. Valley section 27V and valley section 37V are examples of V-shaped sections.

[0079] Furthermore, although various embodiments and modifications have been described above, these embodiments and modifications may be combined to form a complete system. Furthermore, this disclosure is not limited in any way to the embodiments described above, and can be implemented in various forms without departing from the gist of this disclosure. [Explanation of Symbols]

[0080] 1…Ornament, 10…Base, 11…First arm, 11B…Bent section, 11P…First support section, 11N…First claw section, 12…Second arm, 12B…Bent section, 12P…Second support section, 12N…Second claw section, 13…Housing section, 13B…Bottom surface, 13S…Side wall, 13H…Recess, 14…First ring section, 15…Second ring section, 17…Support section, 17a…One end, 17b…Other end, 90…Jewel, 91…Crown, 93…Girdle, 95…Pavilion, 131a…End, 131…Plane, 132…Dome surface, 171…Arc section

Claims

1. A gemstone in which the crown, girdle, and pavilion are formed, A housing portion that accommodates at least a portion of the culet side of the pavilion of the gemstone, A support portion that protrudes from the inner surface of the housing portion and supports a portion of the gemstone in the circumferential direction of the pavilion, A first pressing portion is provided on the opposite side of the support portion, sandwiching the gemstone, and pressing the gemstone toward the support portion, A second pressing portion is provided in a position different from the first pressing portion in the circumferential direction of the gemstone, and presses the gemstone toward the support portion, Personal ornaments equipped with these features.

2. The first pressing portion and the second pressing portion each have a connecting portion for connecting an attachment member used by the user when putting the ornament around their neck, The accessory according to claim 1, wherein the support portion is provided below the connecting portion when the user is wearing the accessory around their neck.

3. The ornament according to claim 1, wherein the housing portion has a covering portion that covers the culet side of the pavilion.

4. The ornament according to claim 3, wherein the covering portion has a flat portion that is formed in a planar shape opposite to the side facing the culet.

5. The jewelry according to claim 1, wherein the first pressing portion and the second pressing portion extend from the outside of the gemstone toward the center, along the crown of the gemstone.

6. The jewelry according to claim 5, wherein the first pressing portion and the second pressing portion have a bent portion that clamps the girdle of the gemstone.

7. The jewelry according to claim 5, wherein the support portion is provided in a region where, with the gemstone facing forward, the region on the side where the second pressing portion is not located, with a first imaginary line passing through the first pressing portion and along the longitudinal direction of the first pressing portion as the boundary, overlaps with the region on the side where the first pressing portion is not located, with a second imaginary line passing through the second pressing portion and along the longitudinal direction of the second pressing portion as the boundary.

8. The ornament according to claim 1, wherein the support portion is provided opposite the pavilion and has an arc-shaped portion formed in an arc shape.

9. The aforementioned gemstone has been processed into a round brilliant cut. The aforementioned housing is formed in a circular shape so that the gemstone faces forward. The ornament according to claim 8, wherein the angle between the line passing through the center of the housing portion and one end of the arc portion and the line passing through the center and the other end of the arc portion is 45 degrees or more and less than 135 degrees.

10. The ornament according to claim 1, wherein the support portion has a recess into which a protrusion formed by the facet of the pavilion fits.

11. The ornament according to claim 10, wherein the support portion is provided opposite the pavilion and has a V-shaped portion formed in a V-shape.

12. The jewelry according to claim 11, wherein the support portion has a plurality of V-shaped portions arranged in the circumferential direction of the gemstone.

13. A gemstone in which the crown, girdle, and pavilion are formed, With the gemstone facing forward, the accommodating portion is formed in a circular shape and accommodates at least a portion of the culet side of the pavilion of the gemstone, A support portion formed in an arc shape, protruding from the inner circumferential surface of the housing portion, and supporting a portion of the gemstone in the circumferential direction of the pavilion, A first pressing portion is provided on the opposite side of the support portion, sandwiching the gemstone, and pressing the gemstone toward the support portion, A second pressing portion is provided in a position different from the first pressing portion in the circumferential direction of the gemstone, and presses the gemstone toward the support portion, A first connecting portion is provided above the support portion when the user is wearing the ornament, and to which the attachment member used when the user puts on the ornament is connected. The ornament is provided above the support portion when the user is wearing it, and the attachment member is connected to a second connecting portion, A planar portion is provided on the side of the housing section opposite to the side in which the gemstone is housed, and is formed in a planar shape. Personal ornaments equipped with these features.

14. A housing portion that accommodates at least a portion of the culet side of the pavilion of a gemstone in which a crown, girdle, and pavilion are formed, A support portion is provided inside the housing portion, protruding from the inner surface of the housing portion and capable of supporting a portion of the pavilion of the gemstone in the circumferential direction, A first pressing portion is provided on the opposite side of the support portion, with the gemstone in between, and capable of pressing the gemstone toward the support portion. A second pressing portion is provided in a position different from the first pressing portion in the circumferential direction of the gemstone, and capable of pressing the gemstone toward the support portion, A gemstone base equipped with [a specific feature / feature].

15. A step of placing a gemstone on a support portion that supports a portion of the pavilion in the circumferential direction of the gemstone, which has a crown, girdle, and pavilion formed thereon, The process involves bending the first pressing portion, which is provided on the opposite side of the support portion with the gemstone in between, and pressing the gemstone toward the support portion. A step of bending a second pressing portion, which is provided at a different position from the first pressing portion in the circumferential direction of the gemstone, and pressing the gemstone toward the support portion, A method for manufacturing personal ornaments.

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