Facet pattern template ruler for different cut facet stones that assist in locating facet junctions

Abstract

The application discloses a drawing template ruler for a faceted gemstone with different cuts, which can assist in positioning the connection points of different facets. The template ruler body is provided with a plurality of step-by-step drawing areas, each corresponding to a gemstone size. Two template shape grooves are arranged in each step-by-step drawing area, and the two template shape grooves correspond to gemstones with the same shape and size. The gemstone cut can be any of the gemstone cuts circulating on the market. In the two template shape grooves in a step-by-step drawing area, the first template shape groove can assist in drawing the outer contour of the gemstone. The second template shape groove includes an auxiliary outer contour line, a facet connection line located in the auxiliary outer contour line, and a hollow groove, which can assist in drawing the connection points of different facets of the faceted gemstone. When in use, the connection points of different facets of the faceted gemstone can be directly positioned and marked. The template ruler directly positions and displays the connection points of different facets of the faceted gemstone, which can improve the efficiency of a jewelry designer in drawing the faceted gemstone and avoid problems such as gemstone inclination, asymmetry, proportion error and the like.

Description

Technical Field

[0001] This application relates to the fields of jewelry design and drawing technology, and in particular to a template ruler that can assist in jewelry design drawing, specifically a template ruler for drawing faceted gemstones of different cuts that can assist in locating the facet connection points. Background Technology

[0002] When designing jewelry pieces, jewelry designers often use a combination of gemstones of different sizes and cuts, including faceted gemstones with various cuts such as emerald, oval, and round.

[0003] Faceted gemstones typically have various facets such as table, star facet, kite facet, and girdle facet. During the drawing process, it is necessary to draw vertical, horizontal, and inclined straight auxiliary lines at 45 degrees and 22.5 degrees, as well as other reference lines, to locate the connection points of each facet. Therefore, the drawing process of faceted gemstones is complex and time-consuming. During the drawing process, problems such as tilted auxiliary lines, smudges on the auxiliary lines after wiping them after the facets are drawn, and unclear images are easily caused.

[0004] Currently, jewelry drawing templates on the market only provide simple outlines for various basic gemstone shapes. When drawing facets of gemstones with different cuts, it's necessary to locate the gemstone's center point and use various drawing tools such as rulers and protractors to draw auxiliary lines that are perpendicular to each other, tilted at 45 degrees, and 22.5 degrees, as well as inner auxiliary lines that match the gemstone's outer outline. When drawing inner auxiliary lines, it's important to measure their proportional relationship with the gemstone's outer outline. Typically, the inner auxiliary lines define the gemstone's table, and their size should not be less than half the size of the gemstone's outer outline. Of course, the drawing methods and table proportions vary slightly depending on the cut of the gemstone.

[0005] In addition, when drawing the facets of gemstones with different cuts, it is necessary to determine the connection points between the table facets, star facets, and upper girdle facets of the gemstone based on the straight auxiliary lines and inner auxiliary lines. Then, these facets are connected according to certain rules to draw the various facets of gemstones with different cuts. In this process, problems such as tilted straight auxiliary lines, disproportionate inner auxiliary lines, and offset of the connection points of each facet often occur.

[0006] Drawing gem facets is particularly difficult for beginners. Due to their lack of understanding of gem facets, beginners often make mistakes such as incorrect connection points, inaccuracies, and proportion issues. Existing jewelry drafting rulers are mainly used for drawing the outer contours of gemstones, not for drawing facets. They lack the ability to quickly draw different facets, and the process of drawing different facets requires drawing multiple straight auxiliary lines and internal auxiliary lines at different angles to determine the connection points. Furthermore, some template rulers have significant differences in their basic length and width ratios, making it difficult to effectively assist designers in drawing internal auxiliary lines. After the facets are drawn, useless auxiliary lines need to be erased, and because of the numerous and complex auxiliary lines, this process is highly likely to result in stains, obvious erasure marks, and an unclean drawing. At the same time, existing template rulers have relatively limited functionality and cannot assist in drawing facets of gemstones with different cuts, resulting in low efficiency and failing to meet the design requirements for faceted gemstones in jewelry. Therefore, there is an urgent need to propose a new technical solution to address the problems existing in current technologies. Summary of the Invention

[0007] This application provides a template ruler for drawing faceted gemstones of different cuts that can assist in locating the facet connection points, in order to solve the problem that the template rulers in the prior art cannot assist in drawing faceted gemstones of different cuts and cannot meet the design requirements of faceted gemstones required in jewelry.

[0008] To achieve the above objectives, this application provides the following technical solution:

[0009] This application provides a drawing template ruler for different faceted gemstones that can assist in locating the facet connection point, including a template ruler body, on which a plurality of step drawing areas are provided;

[0010] Each of the step-by-step drawing areas is provided with two template shape slots. The two template shape slots correspond to gemstones of the same shape and size. The first template shape slot is a hollow slot, and its edge contour coincides with the outer contour line of the gemstone. The second template shape slot includes an auxiliary outer contour line and a faceted connecting line located within the auxiliary outer contour line. Hollow slots are provided at the intersection points of multiple connecting lines on the faceted connecting line and at the intersection points of the faceted connecting line and the auxiliary outer contour line. The auxiliary outer contour line and the faceted connecting line are printed on the template ruler body. The auxiliary outer contour line is the same as the edge contour of the first template shape slot.

[0011] The plurality of step-by-step drawing areas correspond to gemstones of the same shape but different sizes; or, a portion of the plurality of step-by-step drawing areas correspond to gemstones of a first shape of different sizes, and another portion of the plurality of step-by-step drawing areas correspond to gemstones of a second shape of different sizes.

[0012] The template ruler body is a rectangular transparent plate structure.

[0013] Furthermore, in the above technical solution, the groove edge contour of the first template shape groove coincides with the outer contour line of the gemstone in a frontal view.

[0014] Furthermore, the shape and size of the auxiliary outer contour line in the second template forming groove correspond to the shape and size of the groove edge contour of the first template forming groove; the facet connecting lines in the second template forming groove include at least the connecting lines between the kite facet and the upper girdle facet of the gemstone in the frontal view, as well as the connecting lines between the kite facet and the star facet of the gemstone in the frontal view.

[0015] Furthermore, two template shape slots located within one of the step-by-step drawing areas are arranged in a row on the template ruler body at intervals; several of the step-by-step drawing areas are arranged in one or more rows along the extension direction of any one side of the template ruler body.

[0016] Furthermore, several of the step-by-step drawing areas are arranged in two rows along any one side of the template ruler body. The multiple step-by-step drawing areas in the first row correspond to gemstones of different sizes and shapes, and the multiple step-by-step drawing areas are arranged in order of decreasing size of the corresponding gemstones. The multiple step-by-step drawing areas in the second row correspond to gemstones of different sizes and shapes, and the multiple step-by-step drawing areas are arranged in order of increasing or decreasing size of the corresponding gemstones.

[0017] Furthermore, two step indicator marks are printed in one of the step drawing areas near the edge of the template ruler body, and the two step indicator marks correspond one-to-one with the two template shape slots in the step drawing area.

[0018] Furthermore, the bottom of each template forming slot is printed with the size information of the gemstone corresponding to the template forming slot.

[0019] Furthermore, at least one edge of the template ruler body is provided with a scale line; the 0 mark of the scale line is located at the corner of the template ruler body.

[0020] Furthermore, the gemstone cut corresponding to the template shape groove on the template ruler body includes any one of the following: round, oval, emerald, cushion, pillow, marquise, teardrop, and heart shapes.

[0021] Compared with the prior art, this application has the following advantages:

[0022] 1. This application provides a drawing template ruler for faceted gemstones of different cuts that can assist in locating the connection points of facets. It has several step-by-step drawing areas, the number of which corresponds to various sizes of commonly used gemstones. Each step-by-step drawing area contains two template grooves, each corresponding to a gemstone of the same shape and size. The gemstone cut can be any of the commonly available gemstone cuts, such as round, oval, emerald, cushion, pillow, marquise, teardrop, and heart shapes. Taking one step-by-step drawing area as an example, the groove edge of the first template groove coincides with the outer contour of the gemstone, assisting in drawing the outer contour of the gemstone. The groove edge of the second template groove assists in locating the facet connection points, allowing for direct positioning and marking of these points. This template ruler, which directly positions and displays the connection points of different facets of a faceted gemstone, can improve the efficiency of jewelry designers in drawing faceted gemstones. Therefore, the template ruler provided in this application can quickly and effectively draw the facets of gemstones with different cuts, avoiding problems such as gemstone tilt, asymmetry, incorrect facet proportions, and inaccuracy; it facilitates jewelry designers to use faceted gemstones of different sizes and cuts for design, and solves the problem that the template ruler in the prior art cannot assist in drawing the facets of gemstones with different cuts, and cannot meet the design needs of faceted gemstones required in jewelry.

[0023] 2. The template ruler provided in this application is also equipped with scale lines, so it also has the functions of measurement, positioning and auxiliary drawing of a general ruler. The template ruler has multiple functions, which makes it convenient for jewelry designers and beginners to draw different gem facets. It is practical and effectively saves drawing time and reduces the difficulty of drawing.

[0024] 3. The template ruler provided in this application is equipped with step indicator marks, which serve as step reminders, are easy to operate and use, and have clear steps, which can effectively improve the efficiency of design and drawing.

[0025] 4. The template ruler provided in this application is rectangular, which can reduce the overall volume of the ruler while adapting as much as possible to multiple template shape slots arranged in a long strip, making it easy to carry. It can accommodate various sizes and cuts of gemstones, making it easy to use for design and helping beginners to grasp the accuracy of size and different facets.

[0026] 5. The template ruler provided in this application can reduce the drawing of auxiliary lines and avoid stains on the screen or paper damage caused by excessive wiping force. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concepts disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, and size ratios of certain units (components).

[0028] Figure 1 This is a schematic diagram of the first planar structure of the template ruler provided in this application. The template ruler shown in the diagram is a circular template ruler, and the unit of measurement for the dimensions marked below the template shape groove in the diagram is mm.

[0029] Figure 2 This is a schematic diagram of a second planar structure of the template ruler provided in this application. The template ruler shown in the diagram is a round + elliptical template ruler. The unit of measurement for the dimensions marked below the template shape groove in the diagram is mm.

[0030] Figure 3 This is a schematic diagram of the third planar structure of the template ruler provided in this application. The template ruler shown in the diagram is an olive-shaped + teardrop-shaped template ruler. The unit of measurement for the dimensions marked below the template shape groove in the diagram is mm.

[0031] Figure 4 This is a schematic diagram of the fourth planar structure of the template ruler provided in this application. The template ruler shown in the diagram is a pad-shaped + heart-shaped template ruler. The unit of measurement for the dimensions marked below the template shape groove in the diagram is mm.

[0032] Figure 5 This is a schematic diagram of the fifth planar structure of the template ruler provided in this application. The template ruler shown in the diagram is a princess square + emerald green template ruler. The unit of measurement for the dimensions marked below the template shape groove in the diagram is mm.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Template ruler body; 2. Scale lines; 3. Step indicator; 4. First template shape groove; 5. Second template shape groove; 6. Auxiliary outer contour line; 7. Facet connection line; 8. Hollowed-out groove. Detailed Implementation

[0035] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] In the description of this application: unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," etc., in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (e.g., they should not be construed as an emphasis on importance or order). Expressions such as "comprising," "including," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).

[0037] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to facilitate intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationships in the actual product. Changes in these relative positional relationships, without departing from the technical concept disclosed in this application, should also be considered within the scope of this application.

[0038] Existing jewelry drafting rulers are mainly used for drawing the outer contours of gemstones, rather than the facets. They lack the ability to quickly draw different facets of gemstones. Furthermore, drawing different facets requires drawing multiple straight auxiliary lines and inner auxiliary lines at different angles to determine the connection points between different facets. In addition, some template rulers have significant differences in their basic length and width ratios, making it difficult to effectively assist designers in drawing inner auxiliary lines. After the facets are drawn, useless auxiliary lines need to be erased with an eraser. Due to the numerous and complex auxiliary lines, this process is highly likely to result in stains, obvious erasure marks, and an unclean drawing.

[0039] Therefore, existing jewelry drafting rulers have relatively limited functions and cannot assist in drawing facets of gemstones with different cuts, thus failing to meet the design requirements of faceted gemstones in jewelry. To address these issues, this application provides a drawing template ruler for faceted gemstones with different cuts that can assist in locating the facet connection points. This template ruler can help users quickly and effectively draw design drawings of gemstones with different facets, greatly improving work efficiency and reducing drawing difficulty.

[0040] The following embodiments illustrate the structure and usage of the faceted gemstone drawing template ruler for different facet types that can assist in locating facet connection points provided in this application.

[0041] Example 1

[0042] This embodiment provides a drawing template ruler for faceted gemstones of different cuts that can assist in locating the facet connection points. The body of the template ruler is a rectangular transparent plate structure, preferably made of plastic, which is lightweight, durable and not easily broken. It can be a colorless transparent plate or a transparent plate with a certain color, such as a transparent plate with green, blue, pink, etc.

[0043] like Figure 1The template ruler body 1 in this application is preferably rectangular. Firstly, a rectangle is more regular and has right angles, and when used on A4 paper, a rectangular ruler is easier to position. Secondly, the two template shape slots in each step drawing area of ​​the template ruler are arranged in a row, and multiple step drawing areas are arranged in a row. The overall arrangement is regular and has a certain order, and it is arranged in a long strip. The rectangular template ruler can adapt to this arrangement with the smallest area, and minimize the size of the template ruler for easy carrying. Therefore, although the template ruler can also be made into a square, circle, fan shape, etc., these shapes are not as convenient to use and carry as a rectangular ruler.

[0044] The template ruler body 1 in this application has several step-by-step drawing areas. The number of step-by-step drawing areas can be artificially determined based on various sizes of commonly used gemstones on the market. For example... Figure 1 The template ruler on display has 10 step-by-step drawing areas from left to right, with each step-by-step drawing area corresponding to a different gemstone size.

[0045] Each step-by-step drawing area contains two template shape slots, each corresponding to a gemstone of the same shape and size. Figure 1 The two template slots located in the step-by-step drawing area on the far left of the template ruler body each correspond to a round gemstone with a size of 30*30mm. To provide size guidance and facilitate user reference, the bottom of each template slot on the template ruler has the size information of the gemstone corresponding to that slot printed on it.

[0046] See also Figure 1 Let's take the two template shape slots located in the step-by-step drawing area on the far left of the template ruler body as an example for explanation:

[0047] The first template groove 4 (the uppermost of the two template grooves arranged in a row from top to bottom) is a hollow groove, and its edge contour coincides with the outer contour line of the gemstone in a frontal view. The central axis of the outer contour line of the gemstone in a frontal view is parallel to the long or wide side of the template ruler body, which is consistent with the direction of the gemstone's outer contour layout when drawing the front view.

[0048] The second template forming groove 5 (i.e., the lower template forming groove among the two template forming grooves arranged in a row from top to bottom) includes an auxiliary outer contour line 6 and a facet connecting line 7 located within the auxiliary outer contour line 6. Both the auxiliary outer contour line 6 and the facet connecting line 7 are printed on the template ruler body 1. At the intersection of multiple connecting lines on the facet connecting line 7, and at the intersection of the facet connecting line 7 and the auxiliary outer contour line 6, there are hollowed-out grooves 8 (each hollowed-out groove 8 is the connection point of different facets of the faceted gemstone). The shape and size of the auxiliary outer contour line 6 of the second template forming groove 5 correspond to the shape and size of the groove edge contour of the first template forming groove 4. During the use of the template ruler, the auxiliary outer contour line 6 plays a corresponding positioning role. After the auxiliary outer contour line 6 is properly positioned, the connection points of different facets of the faceted gemstone can be obtained by plotting the corresponding hollowed-out groove 8.

[0049] The structure of the template ruler provided in this embodiment can be found in [reference]. Figure 1 The template ruler is made of soft plastic.

[0050] The template shape groove on the template ruler provided in this application can correspond to any of the following gem cut shapes: round, oval, emerald, cushion, pillow, marquise, teardrop, and heart, or other shapes.

[0051] The round, oval, emerald, cushion, pillow, marquise, teardrop, and heart shapes mentioned above are the main gemstone cuts on the market. Based on the different gemstone cuts corresponding to the template ruler, the template ruler can be named as follows: round template ruler, oval template ruler, emerald template ruler, cushion template ruler, pillow template ruler, marquise template ruler, teardrop template ruler, and heart template ruler.

[0052] When using the template ruler provided in this embodiment to assist in drawing gem facets, the operation process is as follows:

[0053] The first step is to choose the shape and size of the gemstone you need. Then, select the appropriate template size based on the gemstone's shape and size. For example, if you need a round gemstone that is 26*26mm, choose a round template size. Figure 1 The display ruler is used to select the template shape slot of the corresponding size on the circular ruler, that is, the step-by-step drawing area in the third column from the left to the right is the target step-by-step drawing area.

[0054] The second step is to place the selected template ruler with the target size and cut on the surface of the A4 paper where the gemstone needs to be drawn. Move the template ruler so that the first template shape groove in the target step drawing area (the groove edge outline is the outer outline of the gemstone in the front view) moves to the position where the front view of the gemstone needs to be drawn in the design draft. After aligning, use a pen to draw the outer outline of the gemstone according to the groove edge outline of the first template shape groove on the template ruler.

[0055] The third step is to move the ruler and align the auxiliary outer contour line (i.e. the gemstone outer contour line) on the second template shape groove in the target step drawing area with the gemstone outer contour line that has been drawn in the previous step. Then, according to the hollow groove on the second template shape groove on the ruler, draw the connection points between different facets.

[0056] The fourth step is to remove the template ruler and draw different facets according to each connection point, including the table facet, star facet, kite facet, and upper waist facet.

[0057] The template ruler provided in this application can quickly and effectively draw the front view of gemstones with different facets, avoiding problems such as gemstone tilt, asymmetry, incorrect facet proportions, and inaccuracy; it facilitates jewelry designers to use faceted gemstones of different sizes and cuts for design, and solves the problem that the template ruler in the existing technology cannot assist in drawing the facets of gemstones with different cuts, and cannot meet the design needs of faceted gemstones required in jewelry.

[0058] Example 2

[0059] This embodiment provides a drawing template ruler for different faceted gemstones that can assist in locating the faceted connection points. This embodiment is based on the template ruler provided in Embodiment 1, and two step indicator marks are printed in a step drawing area near the edge of the template ruler body. The two step indicator marks correspond one-to-one with the two template shape grooves in the step drawing area.

[0060] like Figure 1 , Figure 1 The demonstration showcases a circular template ruler. Within the step-by-step drawing area on the far left of the ruler body, two template shape slots are arranged from top to bottom. Next to each slot are printed step indicators, specifically "step1" and "step2," corresponding to the first and second template shape slots arranged from top to bottom. These step indicators clearly guide users through the correct order of operations, making it very user-friendly for beginners.

[0061] The template ruler provided in this embodiment can guide users to draw different facets of faceted gemstones according to the steps, making it more convenient for jewelry designers to draw faceted gemstones. This is especially beneficial for beginners who are not very clear about the relationship between the connection points. It can save time, the steps are simple and clear, improve the efficiency of design and drawing, and is easy to carry and measure.

[0062] Example 3

[0063] This embodiment provides a template ruler for drawing faceted gemstones with different facet shapes that can assist in locating the facet connection points. This embodiment is based on the template ruler provided in Embodiment Two, with a scale line set along the edge of one long side of the template ruler body. The 0 mark of the scale line is located at the upper left corner of the template ruler body, such as... Figure 1 Of course, depending on the usage requirements, graduation lines can also be set on the edge of one wide side of the template ruler during production. The graduation lines facilitate measurement and positioning using the template ruler. In addition, they enhance the functionality of the template ruler, enabling it to efficiently assist in drawing different gem facets and providing functions such as measurement, positioning, and auxiliary marking.

[0064] Example 4

[0065] This embodiment provides a template ruler for drawing faceted gemstones with different facet shapes that can assist in locating the facet connection points. This embodiment is based on the template ruler provided in Embodiment 3, and two types of template shape grooves are made on one template ruler.

[0066] See Figure 2 The template ruler has 20 step-by-step drawing areas, each containing two template shape slots. The two slots within a single drawing area correspond to gemstones of the same shape and size. Of these 20 drawing areas, 10 correspond to round gemstones of different sizes, and the other 10 correspond to oval gemstones of different sizes. These 20 drawing areas are arranged in two rows on the template ruler. The 10 drawing areas in the first row are arranged in descending order of the corresponding gemstone size, while the 10 drawing areas in the second row are arranged in ascending order of the corresponding gemstone size. Figure 2 The pattern combination template shown can be named "round + oval template".

[0067] Of course, in addition to the template ruler with two patterns mentioned above, template rulers with three, four or even more patterns can also be set. However, the more patterns there are, the larger the area of ​​the template ruler will be, which is not conducive to use and carrying.

[0068] Therefore, this application preferably includes a template ruler comprising two pattern combinations. Figure 2 The template ruler on display measures 210mm x 290mm, the same size as an A4 sheet of paper.

[0069] See Figure 3 , Figure 3A "marquise + teardrop-shaped template ruler" was demonstrated. The template ruler body has 24 step-by-step drawing areas. Among them, 12 step-by-step drawing areas correspond to marquise-shaped gemstones of different sizes, and the other 12 step-by-step drawing areas correspond to teardrop-shaped gemstones of different sizes. These 24 step-by-step drawing areas are arranged in two rows on the template ruler body. The 12 step-by-step drawing areas in the first row are arranged in order of decreasing size of the corresponding gemstones, and the 12 step-by-step drawing areas in the second row are also arranged in order of decreasing size of the corresponding gemstones.

[0070] See Figure 4 , Figure 4 A "cushion-shaped + heart-shaped ruler" was demonstrated. The ruler body has 20 step-by-step drawing areas. Ten of these areas correspond to cushion-shaped gemstones of different sizes, and the other ten correspond to heart-shaped gemstones of different sizes. These 20 step-by-step drawing areas are arranged in two rows on the ruler body. The ten areas in the first row are arranged in descending order of the corresponding gemstone size, and the ten areas in the second row are also arranged in descending order of the corresponding gemstone size.

[0071] See Figure 5 , Figure 5 A "princess-cut + emerald-cut ruler" was demonstrated. The ruler itself has 20 step-by-step drawing areas. Ten of these areas correspond to princess-cut gemstones of different sizes, and the other ten correspond to emerald-cut gemstones of different sizes. These 20 step-by-step drawing areas are arranged in two rows on the ruler. The ten areas in the first row are arranged in descending order of the corresponding gemstone size, and the ten areas in the second row are also arranged in descending order of the corresponding gemstone size.

[0072] In summary, this application provides a gemstone template ruler with different facets, which can improve the efficiency and accuracy of jewelry design and drawing. The template ruler provided by this application offers a step-by-step drawing method, which displays the gemstone facet drawing process step by step. The steps are clear and easy to use, which can greatly improve work efficiency and is convenient for beginners.

[0073] Furthermore, the template shape groove in the second step indicated on the template ruler directly determines the connection point of faceted gemstones with different cuts, making it more convenient for jewelry designers to draw faceted gemstones and saving drawing time, approximately 5-10 minutes. At the same time, it solves problems such as tilted auxiliary lines and disproportionate drawing, improves drawing accuracy, and reduces stains and marks that appear after wiping after drawing multiple auxiliary lines.

[0074] In addition, the template ruler provided in this application can adapt to various gemstone shapes and sizes, such as round, oval, emerald, cushion, pillow, marquise, teardrop, heart and other major gemstone cuts on the market. It also covers various commonly used sizes for each cut, which can meet the design needs of jewelry designers for gemstones of different sizes and cuts. It is a professional template ruler for drawing facets of different gemstone cuts in jewelry.

[0075] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

[0076] The present application has been described in a relatively specific and detailed manner above through general descriptions and specific embodiments. It should be understood that, based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not depart from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the protection scope of the claims of the present application.

Claims

1. A drawing template ruler for different cut facet gemstones that can assist in locating the facet junctions, characterized in that, The template ruler body is provided with a plurality of step-by-step drawing areas; Each step-by-step drawing area is provided with two template shape grooves corresponding to the same shape and size of gemstones, the first template shape groove in the two template shape grooves is a hollow groove, and the groove edge profile of the first template shape groove is coincided with the outer profile line of the gemstone; the second template shape groove in the two template shape grooves comprises an auxiliary outer profile line and a facet connecting line located in the auxiliary outer profile line, a plurality of connecting lines intersect at the intersection points of the facet connecting line, and the intersection points of the auxiliary outer profile line and the facet connecting line are provided with hollow grooves, the auxiliary outer profile line and the facet connecting line are printed on the template ruler body, and the auxiliary outer profile line is the same as the groove edge profile of the first template shape groove. A plurality of step-by-step drawing areas correspond to the same shape and different sizes of gemstones; or, a part of the plurality of step-by-step drawing areas correspond to different sizes of the first shape of gemstones, and another part of the plurality of step-by-step drawing areas correspond to different sizes of the second shape of gemstones. The template ruler body is a rectangular transparent plate structure.

2. The different cut facet gemstone drawing template ruler that can assist to position the facet junction of claim 1, characterized in that, The groove edge profile of the first template shape groove is coincided with the outer profile line of the gemstone under the front view angle; The shape and size of the auxiliary outer profile line in the second template shape groove correspond to the shape and size of the groove edge profile of the first template shape groove; the facet connecting line in the second template shape groove at least comprises the connecting line of the kite facet and the upper waist small face of the gemstone under the front view angle, and the connecting line of the kite facet and the star small face of the gemstone under the front view angle.

3. The different cut facet gemstone drawing template ruler that can assist to position facet junctions of claim 1, wherein, The two template shape grooves located in one step-by-step drawing area are arranged in a column on the template ruler body; a plurality of step-by-step drawing areas are arranged in one or more rows along the extension direction of any edge of the template ruler body.

4. The different cut facet gemstone drawing template ruler that can assist to position the facet junction of claim 3, characterized in that, A plurality of step-by-step drawing areas are arranged in two rows along the extension direction of any edge of the template ruler body, a plurality of step-by-step drawing areas located in the first row correspond to different sizes of the first shape of gemstones, and the plurality of step-by-step drawing areas are arranged in order of gradually decreasing corresponding gemstone sizes; A plurality of step-by-step drawing areas located in the second row correspond to different sizes of the second shape of gemstones, and the plurality of step-by-step drawing areas are arranged in order of gradually increasing or gradually decreasing corresponding gemstone sizes.

5. The differently shaped facet gemstone drawing template ruler that can assist in locating the facet junctions of claim 1, wherein, Two step indication marks are printed in one step-by-step drawing area close to the edge of the template ruler body, and the two step indication marks correspond to the two template shape grooves in the step-by-step drawing area.

6. The differently shaped facet gemstone drawing template ruler that can assist in locating the facet junctions of claim 1, wherein, The bottom of each template shape groove is printed with size information of the gemstone corresponding to the template shape groove.

7. The differently shaped facet gemstone drawing template ruler that can assist in locating the facet junctions of claim 1, wherein, At least one edge of the template ruler body is provided with a scale line, and the 0 scale of the scale line is located at the corner of the template ruler body.

8. The differently shaped facet gemstone drawing template ruler that can assist in locating the facet junctions of claim 1, wherein, The gemstone cut corresponding to the template shape groove on the template ruler body comprises any one of round, oval, emerald, pad, pillow, olive, water drop and heart.

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