A jewellery piece

Abstract

A jewellery piece (10, fig.1), such as a ring, comprising a head 14 including a first formation 26, preferably a recess or a projection (40, fig.5a), a band 12 including a first end 16, a second end 2

Description

FIELD The present invention relates to a jewellery piece. BACKGROUND There are many different types of jewellery pieces such as rings, bracelets, and necklaces. Jewellery is typically made from silver, gold, platinum or other precious metals, and some pieces of jewellery, particularly rings, often include one or more precious stones which are set into the jewellery piece. Modular jewellery pieces are known for which one or more parts of the jewellery piece may be interchanged according to the user’s preferences so that the user can tailor a jewellery piece to their preference whilst not necessarily having to purchase a different jewellery piece which would otherwise be required for a fixed, non-modular, jewellery piece. For example, in the case of a ring, it is known to provide a ring having a band which receives a head forming the decorative part of the ring and the head being removably receivable by the band to permit the same band to be used to receive a different head. Prior art modular jewellery pieces may suffer from one or more drawbacks. For example, they may have complex mechanisms requiring separate tools to change a part of the jewellery piece. The interchangeable part or parts may become loose during use. Changing parts of the jewellery pieces may require a specialist jeweller and cannot be completed by the end user. BRIEF DESCRIPTION OF THE INVENTION According to an aspect of the present disclosure there is provided a jewellery piece including: a head including a first formation; and a band including: a first end having a first face including a second formation; a second end having a second face, wherein the first and second ends define a space therebetween for removably receiving the head; and a main surface which extends between the first end and the second end, wherein the second formation extends across the first face to terminate in a locating formation in the main surface which locates the first formation relative to the second formation, wherein the band is made from a resilient material so that, when a user inserts the head into the space, the first formation and second formation co-operate with each other to urge the first and second ends apart and place the band under tension as the head is moved such that the first and second ends press against the head to hold the head relative to the band. Optionally or preferably, the locating formation is a locating recess and the first formation is a projection member, or the locating formation is a locating projection and the first formation is a recess. Optionally or preferably, the head may be removed from the band by a user moving the head away from the space, and wherein the first formation and second formation co-operate to permit movement of the head to release tension in the band. Optionally or preferably, the locating formation extends along a direction which is transverse to the direction along which the second formation extends. Optionally or preferably, the first formation is one of a recess or a projection member and the second formation is the other of the recess or the projection member. Optionally or preferably, the recess includes a portion which has a greater depth than the rest of the recess. Optionally or preferably, the projection member includes a securing member which is proud of the rest of the projection member. Optionally or preferably, the securing member is received by the portion of the recess. Optionally or preferably, the securing member has a distal end having one or more bevelled or chamfered edges. Optionally or preferably, the first formation and / or second formation are generally hat shaped. Optionally or preferably, the first face and / or second face is generally planar, optionally or preferably the first and / or second face is inclined at an angle in plan view when the band is resting on a horizontal surface. Optionally or preferably, the band defines an internal space in communication with the space between the first and second ends, and optionally or preferably the first face and / or second face lie in a plane which intercepts the centre of the internal space S. Optionally or preferably, the head includes a base and a decorative portion connected to the base, and wherein the first formation is located on the base. Optionally or preferably, a surface of the base which is visible when the head is received by the band is substantially flush or level with the main surface of the band. Optionally or preferably, the decorative portion sits substantially or wholly proud of the main surface of the band when the head is received by the band. Optionally or preferably, the base includes first and / or second arms which are located in the space when the head is received by the band. Optionally or preferably, when the head is received by the band, the first and second formations overlap each other to prevent rotation of the head relative to the band. Optionally or preferably, when the head is received by the band, one of the first formation and second formation extends into the other of the first and second formation to prevent rotation of the head relative to the band. According to an aspect of the present disclosure there is provided a jewellery piece including: a head including a first formation; and a band including: a first end having a first face including a second formation which co-operates with the first formation to hold the head relative to the band; a second end having a second face, wherein the first and second ends define a space therebetween for removably receiving the head, wherein the first formation is one of a recess or a projection member and the second formation is the other of the recess or the projection member; wherein the projection member includes a securing member which is proud of the rest of the projection member and is received in the recess when the head is received by the band. Optionally or preferably, the recess and the projection member are substantially or are the same shape. Optionally or preferably, the recess includes a portion which has a greater depth than the rest of the recess. Optionally or preferably, the securing member is received by the portion of the recess. Optionally or preferably, the first and / or second formations are generally hat shaped. Optionally or preferably, the securing member has a distal end having one or more bevelled or chamfered edges. Optionally or preferably, the first face is generally planar and is inclined at an angle in plan view. According to an aspect of the present disclosure there is provided a band for a jewellery piece, wherein the band is for receiving a head including a first formation, and the band includes: a first end having a first face including a second formation; a second end having a second face, wherein the first and second ends define a space therebetween for removably receiving the head; and a main surface which extends between the first end and the second end, wherein the second formation extends across the first face to terminate in a locating formation in the main surface which locates the first formation relative to the second formation, wherein the band is made from a resilient material so that, when a user inserts the head into the space, the first formation and second formation co-operate with each other to urge the first and second ends apart and place the band under tension as the head is moved such that the first and second ends press against the head to hold the head relative to the band. According to an aspect of the present disclosure there is provided a band for a jewellery piece, wherein the band is for receiving a head including a first formation, and the band includes: a first end having a first face including a second formation which co-operates with the first formation to hold the head relative to the band; a second end having a second face, wherein the first and second ends define a space therebetween for removably receiving the head, wherein the first formation is one of a recess or a projection member and the second formation is the other of the recess or the projection member; wherein the projection member includes a securing member which is proud of the rest of the projection member and is received in the recess when the head is received by the band. A jewellery piece according to any preceding aspect wherein: the band includes two said second formations; the head includes two said first formations; and the first face includes one of the said second formations and the second face includes the other of the said second formations. A jewellery piece according to any preceding aspect wherein the jewellery piece is: a ring; a bracelet or part of a bracelet; or a necklace or part of a necklace. A head including a second formation for use with a jewellery piece or band according to any preceding aspect. According to an aspect of the present disclosure there is provided a kit of parts for including a jewellery piece according to any preceding aspect, and including: a plurality of said heads which are receivable by the band; and / or a plurality of said bands which may receive the head or the plurality of heads. BRIEF DESCRIPTION OF THE FIGURES In order that the present disclosure may be more readily understood, preferable embodiments thereof will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 is a perspective view of a jewellery piece embodying an aspect of the present disclosure; Figure 2 is a plan view of the jewellery piece of figure 1; Figure 3 is a perspective view showing the jewellery piece of figure 1 in a certain state; Figure 4 is a partial perspective view of a component part of the jewellery piece of figure 1; Figure 5a is a perspective view of another component part of the jewellery piece of figure 1; Figure 5b is a front view of the jewellery piece of figure 1; Figures 6 to 11 are plan and perspective partial cross-section views of the jewellery piece of figure 1 in certain states of use; Figure 12 shows different types of a component part for use with the jewellery piece of figure 1; and Figure 13 is a diagram showing a kit of parts according to an aspect of the present disclosure. DETAILED DESCRIPTION OF THE DISCLOSURE With reference to figures 1 to 11, these show a jewellery piece 10 according to an aspect of the present disclosure. In the figures, where features of the jewellery piece 10 which would not be visible because they are internal features, or are obscured by other features in that view, certain ones of those features are shown in dashed lines for use in understanding the present disclosure. The jewellery piece 10 shown in the figures is a ring. The present disclosure is not limited to the jewellery piece being a ring and includes other types of jewellery pieces including bracelets, and necklaces for example. The jewellery piece 10 includes a head 14 and a band 12. The head 14 includes a pair of first formations 26. The band 12 includes a first end 16 having a first face 18 and a second end 20 having a second face 22. In this example, the band 12 forms the shaft of a ring. The first and second faces 18, 22 each include second formations 28. The first and second ends 16, 20 define a space 24 therebetween for removably receiving the head 14. The band 12 includes a main surface 29 which extends between the first end 16 and the second end 20. Each of the second formations 28 extend across the respective first and second faces 18, 22 to terminate in respective locating formations 28a, 28b in the main surface 29 which locate the first formations 26 relative to the second formations 28.The band 12 is made from a resilient material so that, when a user inserts the head 14 into the space 24, the first formations 26 and second formations 28 co-operate with each other to urge the first and second ends 16, 20 apart and place the band 12 under tension as the head 14 is moved such that the first and second ends 16, 20 press against the head 14 to hold the head 14 relative to the band 12. As will be described, in examples, both the band 12 and head 14 may be interchangeable so that different bands 12 and heads 14 having correspondingly formed first, second and locating formations 26, 28, 28a, 28b may be used with each other. When the head 14 is received by the band 12, the first and second formations 26, 28 may overlap each other to prevent rotation of the head 14 relative to the band 12 in examples. In examples, when the head 14 is received by the band 14, one of the first formation 26 and second formation 28 extends into the other of the corresponding first and second formation 26, 28 to prevent rotation of the head 14 relative to the band 12. In the present example, the first formations 26 are identical to each other, and the second formations 28 are identical to each other, but they may not be in other examples provided that the second formation 28 is suitable for co-operating with the corresponding first formation 26 to permit the head 14 to be received in the band 12. In examples, the head 14 may only have a single first formation 26 and the band 12 may have a corresponding single second formation 28 formed in one of the first and second faces 18, 22. In such examples, the other side of the head 14 and other face 18, 22 may have formations configured differently to the first and second formations 26, 28, or the other face 18, 22 may have no formations. The band 12 may be a generally annular shape. In the example shown in the figures, the band 12 is generally circular. In examples, the band 12 may have other shapes including, but not limited to, triangular, square, or octagonal, according to the desired aesthetic design of the jewellery piece 10. The shape of the band 12 may depend on the type of jewellery piece. For example, jewellery piece 10 may be part of a necklace having a chain and the band 12 may be connected to the chain. The band 12 may form the main body of a necklace in other examples. In examples, the jewellery piece 10 may be a bracelet and the band 12 is the main body of the bracelet. In other examples, the jewellery piece 10 may be part of a bracelet and the band 12 may be connected to the main body of the bracelet, e.g. a chain thereof. In this example, the band 12 defines an internal space S which is in communication with the space 24 between the first and second ends 16, 20. The first face 18 and / or second face 22 may be generally planar. The first face 18 and / or second face 22 may be inclined at an angle. In this example, the first face 18 and the second face 22 may each lie in respective planes P which intercept the centre of the internal space S (see figure 6a). In examples, only one of the faces 18, 22 may lie in such a plane. The first and second faces 18, 22 may be inclined at an angle in plan view when the band 12 is resting on a horizontal surface. In examples only one of the faces 18, 22 may be inclined. The main surface 29 extends around the band 12. The main surface 29 is visible to the user when the head 14 is received in the band 12. The first and second faces 18, 22 are not part of the main surface 29. The first and second faces 18, 22 are not visible to the user when the head 14 is received in the band 12. In plan view, when the band 12 is resting on a horizontal surface, referring to figure 2, the main surface 29 has an outwardly facing portion 30 which faces away from the internal space S and an inwardly facing portion 31 which faces towards the internal space S. The locating formations 28a, 28b are positioned on the outwardly facing portion 30 and inwardly facing portion 31 in this example. In this example, two locating formations 28a are positioned on the outwardly facing portion 30 adjacent respective first and second ends 16, 20, and two locating formations 28b are positioned on the inwardly facing portion 31 adjacent respective first and second ends 16, 20. The locating formations 28a, 28b may be locating recesses which form respective opposing ends 28’, 28” of the second formations 28. The first face 18 and / or second face 22 may be generally planar. When viewed in plan view, as shown in figure 6a, the first face 18 and / or second face 22 may be inclined at an angle. The locating formations 28a, 28b extend away from the respective first and second faces 18, 22. The locating formations 28a, 28b may extend along respective directions which are transverse to the respective directions along which the rest of the second formations 28 extend along the faces 18, 22. In cross-section, the locating formations 28a, 28b are shaped to follow the shape of the first formations 26 so that the first formations 26 may be inserted into the locating formations 28a, 28b before moving further along the second formations 26 when the head 14 is inserted into the band 12. In this example, the locating formations 28a, 28b are rectangular shaped in cross-section. In examples, the locating formations 28a, 28b may have other shapes in cross-section to correspond to the shape of the first formations 26, e.g. semi-circular, triangular or the like. The locating formations 28a, 28b are provided so that the second formations 26 are open where they meet the main surface 29. In other examples, each second formation 26 may only terminate in one locating formation 28 at the main surface 29, e.g. in the outwardly facing portion 30, and the other end of the second formation 26 may not open onto the main surface 29, i.e. the other end of the second formation 26 terminates within its respective face 18, 22. The second formations 28 may be generally hat-shaped. The second formations 28 may be recesses 34 which extend along the first and second faces 18, 24. Each recess 34 extends between the respective locating formations 28a, 28b. The recess 34 may extend between the outwardly facing portion 30 and the inwardly facing portion 31. The recess 34 may be generally elongate and extend along the entire length of its respective first or second face 18, 22. In examples, each of the second formations 28 may only terminate at one locating formation at the main surface 29 rather than two locating formations at respective portions of the main surface 29. In such examples, the recess 34 may only extend along part of the length of the face 18, 22. The recesses 34 are correspondingly shaped to the shape of the first formations 26 which are received within the recesses 34 when the head 14 is received by the band 12. Each recess 34 may include a portion 36 which has a greater depth than the rest of the recess 34. The portion 36 may extend further into the corresponding face 18, 22 than the rest of the recess 34. The portion 36 may be positioned generally centrally along the length of the recess 34. The portion 36 has first and second lateral sides 36a, 36b which are connected by a third side 36c forming a distal end of the portion 36. Each of the lateral sides 36a, 36b generally follow along a line which follows the shape of the band 12. The portion 36 may have bevelled or chamfered edges which connect the lateral sides 36a, 36b to the respective ends of the third side 36c. In this example, the first lateral side 36a is longer than the second lateral side 36b. The first lateral side 36a is positioned closer to the outwardly facing portion 30 than the inwardly facing portion 31 and the second lateral side 36b is positioned closer to the inwardly facing portion 31 than the outwardly facing portion 30. Referring to figures 5 and 6a, the head 14 may include a base 46 and a decorative portion 48 connected to the base 46. The first formations 26 may be located on the base 46. The base 46 may include first and second arms 46a, 46b which are located in the space 24 when the head 14 is received by the band 12. The first and second arms 46a, 46b may extend outwardly from respective lateral sides of the head 14. The arms 46a, 46b may be shaped to follow or align with the shape of the band 14 when the arms 46a, 46b are located in the space 24. The first and second arms 46a, 46b may terminate in free ends which include the first formations 26. The decorative portion 48 may include a frame 49 for holding a decorative member 52. The decorative member 52 may take different forms, for example, it may be a diamond, ruby or other precious stone. The frame 49, base 46 and / or band 12 may be made from the same material. Example materials include steel, silver and gold, but other materials may be used provided they are suitably resilient. The base 46 may have a surface 46’ which is the only part of the base 46 that is visible when the head 14 is received by the band 12 and the surface 46’ may be substantially flush or level with the main surface 29 of the band 12. In examples, the decorative portion 48 may be larger than the base 46, such that the decorative portion 48 obscures the base 46 so that the base 46 is substantially not visible to a user during normal use, e.g. when the jewellery piece 10 is a ring worn on a user’s finger. Referring to figures 5a and 5b, figure 5a shows the head 14 in perspective view and figure 5b shows the jewellery piece 10 in a front view with the head 14 received in the band 12. The first formations 26 may be in the form of projection members 40. In this example, the projection members 40 extend outwardly from respective lateral sides of the head 14. The projection members 40 are located at respective ends of the first and second arms 46a, 46b. The first formations 26 may have the same shape as the second formations 28 to be received relative to one another as the head 14 is moved into the space 24. In this example, the projection members 40 are generally hat-shaped. The projection members 40 extend along the length of the end faces of the arms 46a, 46b and are positioned generally centrally of the end faces with planar surfaces to either side of the projection members 40. Each projection member 40 of the first formation 28 includes a securing member 42 which is proud of the rest of the projection member 40. The securing member 42 is received in the portion 36 of the corresponding recess 34. The securing member 42 may be positioned generally centrally along the length of the projection member 40. The securing member 42 has the same general shape as the portion 36. The securing member 42 has first and second lateral sides 42a, 42b which are connected by a third side 42c forming a distal end of the securing member 42. The securing member 42 may have bevelled or chamfered edges which connect the lateral sides 42a, 42b to the respective ends of the third side 42c. In this example, the first lateral side 42a is longer than the second lateral side 42b. The lateral sides 42a, 42b each extend along a line which generally follows the shape of the body 12. When the head 14 is received in the space 24, the first lateral side 42a is positioned closer to the outwardly facing portion 30 than the inwardly facing portion 31 and the second lateral side 42b is positioned closer to the inwardly facing portion 31 than the outwardly facing portion 30. Each of the first formations 26 is generally elongate and forms a rail or track for guiding the first formation 26 about the corresponding second formation 28 as the head 14 is inserted into the band 12. Referring to figures 6 to 11, use of the jewellery piece 10 to insert the head 14 into the band 12 will now be described. Figures 6a, 7a, 8a are views of the head 14 at different positions relative to the band 12 with the band 12 shown in cross-section. Figures 6b, 7b, 8c are perspective views of the head 14 and band 12 in the corresponding different positions shown in figures 7a, 7b, 8c with the band 12 shown in cross-section. Referring to figures 6a and 6b, a user must first position the head 14 for alignment with the space 24. In this position, the head 14 is positioned to the outwardly facing portion 30 side of the band 12. In the absence of the head 14 in the band 12, the space 24 has a smaller width dimension compared to the portion of the base 46 including the securing formations 42. This is shown by the dashed lines A which project vertically from the securing formations 42 onto the band 12 in figures 1 and 6a. The user must align the first formations 26 to the locating formations 28a, 28b so that the first formations 26 can be located relative to the second formations 28. The user can easily handle the head 14 relative to the band 12 by first inserting the lower portions of the first formations 26 into the locating formations 28a, 28b until the securing members 42 abut the outwardly facing portion 30 of the band 12 adjacent the edges of the locating formations 28a, 28b. Due to the shape of the edges between the sides 42a, 42b, 42c of the securing members 42, when the user continues to push the head 14 towards the band 12, the first and second formations 26, 28 co-operate and push the ends 16, 20 apart to increase the size of the space 24 whilst the securing members 42 slide over the outwardly facing portion 30 as the head 14 is pushed into the space 24. Figures 7a and 7b show jewellery piece 10 in this state with the first and second formations 26, 28 co-operating with each other and the base 46 being partially located in the space 24 whilst the securing members 42 abut the edge portions of faces 18, 22. In this state, the band 12 is placed under tension because the ends 16, 20 have been pushed apart. The shape of the first formations and second formations 26, 28 may be different in examples, provided that the first formations 26 are able to guide the first formations 26 about the second formations 28 whilst preventing relative rotation between the head 14 and the band 12. Accordingly, where securing members 42 are provided in examples, the shape of the securing members 42, their relative position along the second formations 28, and / or their relative dimensions or geometrical features, may be different provided that the securing members 42 permit the head 14 to be received by the band 12 as will be appreciated by the skilled person. For example, the formations 26, 28 and / or securing members 42 may also be altered in order to fit a particular design or type of jewellery piece, e.g. a particular shape or design of shank for a ring. The user may continue to push the head 14 causing the base 46 to move further into the space 24 and further urge the ends 16, 20 apart as shown in figures 8a and 8b at which point the space 24 is at its largest width because the whole of the distal sides 42c of the securing members 42 abut the relatively shallower upper parts of the recesses 34 located adjacent the portions 36. The band 14 is at maximum tension at this point. The head 14 may then be pushed further until the head 14 reaches the position shown in figures 9a and 9b for which the upper edges of the securing members 42 between sides 42a, 42c abut edges of the portions 36. As the head 14 is moved past this point, as shown in figures 10a, 10b, the securing members 42 move into the portions 36 to be received therein whilst the ends 16, 20 move towards each other due to the resilience of the band 12 in a snap-lock or snap-fit action. The ends 16, 20 continue to move towards each other and reach the position shown in figures 11. In this position, the first 16 and second 20 ends press against the head 14 to hold the head 14 relative to the band 12 due to the tension in the band 12. The first and second formations 26, 28 are firmly engaged and there is substantially no space or gaps between them. In examples, the jewellery piece 10 may permit a user to insert the head 14 by angling one of the first formations 26 relative to one of the locating formations 28a, e.g. formation 28a at the first end 16, and then using the second formation 28 at the first end 16 as a pivot point. The head 14 may be pivoted and slid relative to the band 12 so that the side of the head 14 including the opposite first formation 26 is received by the second end 20 and causes the head 14 to snap-fit to the band 12. The head 14 may be removed from the band 12 by a user moving the head 14 away from the space 24 by simply pulling the head 14 out of the band 12 with sufficient force so that the first formation 26 and second formation 28 co-operate to permit movement which decreases the size of the opening 24 as the head 14 is moved to release tension in the band 12. A user may customise the jewellery piece 10 by replacing the head 14 or band 12 by a different design of head or band which has corresponding formations to those of the head 14 and band 12 so that they can be interchangeably used with each other. Features of the jewellery piece 10 are beneficial in securing the band 12 and head 14 together. For example, the locating formations 28a, 28b allow the user to more easily locate the first and second formations 26, 28 relative to each other so that the first and second formations 26, 28 are correctly aligned. This lessens the risk of the head 14 inadvertently being pushed out of the space 24 due to misalignment under the force applied by the ends 16, 20 when the head 14 is inserted into the band 12. In examples for which the securing members 42 have bevelled or chamfered edges, these make it easier for the first formations 26 to be received into the space 24 whilst providing increased tension in the band 14 due to relatively large width of the base 46 about the securing members 42 compared to the space S prior to insertion of the head 14. In examples for which the securing members 42 are provided, where tension force applied by the band 12 on the head 14 may reduce overtime due to repeated insertion and removal of the head 14 from the band 12, or deterioration in the material forming the band / head, the securing members 42 inhibit the head 14 becoming separated from the band 12. This is because the securing members 42 extend further into the band 12 compared to the rest of the first formations 26. Thus, even if the ends 16, 20 were to move apart, the securing members 42 would still prevent the head 14 from falling out of the band 12 compared to if the first formations 26 had no such securing members 42. The securing members 42 may be utilised for other types of jewellery pieces 10 which may not have a head 14 which is held solely by the tension in the band 12 and / or require tools for removing or inserting the head 14. For these types of pieces, the securing members 42 may be part of a projection member that prevents rotation between the head and band to provide further protection should the head become loose. In examples, due to the geometry of the first and second formations 26, 28 described above, the head 14 may be easily received by, and removed from, the band 12 without the need for a separate tool or key to open the band 12. The user can simply apply a force to the head 14 to allow it to be received by the band 12 or removed from the band 12. In examples for which the visible portion of the base 46 follows the shape of the band 12, a jewellery piece 10 may be formed according to existing types of design without having to change the visible appearance of the piece 10 to accommodate the ability to change the head 14 or band 12. This allows for a wider range of jewellery piece designs to be employed, e.g. heads having different types and / or shapes of frame 49 and decorative members 52, without being limited due to the head 14 being removable. For example, as the shape of the visible portion of the base 46 matches the band 12, the decorative portion 48 of the head 14 may be substantially or wholly proud of the band 12 and / or base 46 which is a common design feature of rings. Figure 12 shows some examples of heads 14 having differently arranged frames 49 and / or decorative members 52. Other frames 49 may be used, and other shaped heads 14 may be used, depending on the type of jewellery being designed. Referring to figure 5b, this shows a plan view of the jewellery piece 10 with the decorative member 52 shown as translucent. The head 14 is wider than the base 46 such that the base 46 is generally not visible during normal use and so the points about which the base 46 joins the band 12 are not discernible during normal use. This is advantageous, as the jewellery piece 10 appears like any other rings currently available which do not include an interchangeable head 14. Referring to figure 14, this shows a kit of parts for forming different jewellery pieces 10 in the form of rings by interchanging one or more heads 14 having different designs, and one or more bands 12 having different designs where each of the heads 14 and each of the bands 12 have compatible first and second formations 26, 28 as previously described to permit interchangability between the heads 14 and bands 12. Any one of the bands 12 can receive any one of the heads 14 permitting a high degree of customisation for the user. Although the examples shown in the figures show first formations 26 which are projection members 40 and locating formations 28a, 28b which are locating recesses, in other examples the locating formations 28a, 28b may be projection members and the first formations 26 may be recesses that co-operate with the projection members. For example, the first formations 26 as shown in the figures may be provided in the same form on the first and second ends 16, 20 whilst the second formations 28 as shown in the figures may be provided in the same form on the lateral sides of the head 14 instead, i.e. the configuration of the first and second formations 26, 28 may be reversed relative to the head and band without departing from the scope of the present disclosure as will be understood by the skilled person. Although the examples shown in the figures show a head 14 and band 12 configured so that the head 14 moves into the space 24 along a direction towards the centre of the internal space 24, in other examples, the head 14 and band 12 may be arranged with first, second and locating formations 26, 28, 28a, 28b configured differently so that, with the band 12 orientated horizontally, the head 14 may be moved vertically into the space 24. In such examples, the first and second formations 26, 28 may be orientated vertically rather than the horizontal orientation shown in the figures. When used in this specification and claims, the terms "comprises" and "comprising" and variations thereof mean that the specified features, steps or integers are included. The terms are not to be interpreted to exclude the presence of other features, steps or components. The invention may also broadly consist in the parts, elements, steps, examples and / or features referred to or indicated in the specification individually or collectively in any and all combinations of two or more said parts, elements, steps, examples and / or features. In particular, one or more features in any of the embodiments described herein may be combined with one or more features from any other embodiment(s) described herein. Protection may be sought for any features disclosed in any one or more published documents referenced herein in combination with the present disclosure. Although certain example embodiments of the invention have been described, the scope of the appended claims is not intended to be limited solely to these embodiments. The claims are to be construed literally, purposively, and / or to encompass equivalents.

Claims

1. A jewellery piece including:a head including a first formation; anda band including:a first end having a first face including a second formation;a second end having a second face, wherein the first and second ends define a space therebetween for removably receiving the head; anda main surface which extends between the first end and the second end, wherein the second formation extends across the first face to terminate in a locating formation in the main surface which locates the first formation relative to the second formation,wherein the band is made from a resilient material so that, when a user inserts the head into the space, the first formation and second formation co-operate with each other to urge the first and second ends apart and place the band under tension as the head is moved such that the first and second ends press against the head to hold the head relative to the band.

2. A jewellery piece according to claim 1 wherein the locating formation is a locating recess and the first formation is a projection member, or the locating formation is a locating projection and the first formation is a recess.

3. A jewellery piece according to claim 1 or 2 wherein the head may be removed from the band by a user moving the head away from the space, and wherein the first formation and second formation co-operate to permit movement of the head to release tension in the band.

4. A jewellery piece according to any preceding claim wherein the locating formation extends along a direction which is transverse to the direction along which the second formation extends.

5. A jewellery piece according to any preceding claim wherein the first formation is one of a recess or a projection member and the second formation is the other of the recess or the projection member.

6. A jewellery piece according to claim 5 wherein the recess includes a portion which has a greater depth than the rest of the recess.

7. A jewellery piece according to claim 5 or 6 wherein the projection member includes a securing member which is proud of the rest of the projection member.

8. A jewellery piece according to claim 7 when dependent on claim 6 wherein the securing member is received by the portion of the recess.

9. A jewellery piece according to claim 7 or 8 wherein the securing member has a distal end having one or more bevelled or chamfered edges.

10. A jewellery piece according to any preceding claim wherein the first formation and / or second formation are generally hat shaped.

11. A jewellery piece according to any preceding claim wherein the first face and / or second face is generally planar, optionally or preferably the first and / or second face is inclined at an angle in plan view when the band is resting on a horizontal surface.

12. A jewellery piece according to any preceding claim wherein the band defines an internal space in communication with the space between the first and second ends, and optionally or preferably the first face and / or second face lie in a plane which intercepts the centre of the internal space.

13. A jewellery piece according to any preceding claim wherein the head includes a base and a decorative portion connected to the base, and wherein the first formation is located on the base.

14. A jewellery piece according to claim 13 wherein a surface of the base which is visible when the head is received by the band is substantially flush or level with the main surface of the band, and / or wherein the decorative portion sits substantially or wholly proud of the main surface of the band when the head is received by the band.

15. A jewellery piece according to any preceding claim wherein the base includes first and / or second arms which are located in the space when the head is received by the band.

16. A jewellery piece according to any preceding claim wherein, when the head is received by the band, the first and second formations overlap each other to prevent rotation of the head relative to the band, and / or wherein when the head is received by the band, one of the first formation and second formation extends into the other of the first and second formation to prevent rotation of the head relative to the band.

17. Ajewellery piece including:a head including a first formation; anda band including:a first end having a first face including a second formation which co-operates with the first formation to hold the head relative to the band;a second end having a second face, wherein the first and second ends define a space therebetween for removably receiving the head,wherein the first formation is one of a recess or a projection member and the second formation is the other of the recess or the projection member;wherein the projection member includes a securing member which is proud of the rest of the projection member and is received in the recess when the head is received by the band.

18. A jewellery piece according to claim 17 wherein the recess and the projection member are substantially or are the same shape, and / or wherein the recess includes a portion which has a greater depth than the rest of the recess, optionally or preferably wherein the securing member is received by the portion of the recess.

19. A jewellery piece according to claim 17 or 18 wherein:the first and / or second formations are generally hat shaped, and / orthe securing member has a distal end having one or more bevelled or chamfered edges, and / orfirst face is generally planar and is inclined at an angle in plan view.

20. A band for a jewellery piece, wherein the band is for receiving a head including a first formation, and the band includes:a first end having a first face including a second formation;a second end having a second face, wherein the first and second ends define a space therebetween for removably receiving the head; anda main surface which extends between the first end and the second end, wherein the second formation extends across the first face to terminate in a locating formation in the main surface which locates the first formation relative to the second formation,wherein the band is made from a resilient material so that, when a user inserts the head into the space, the first formation and second formation co-operate with each other to urge the first and second ends apart and place the band under tension as the head is moved such that the first and second ends press against the head to hold the head relative to the band.

21. A band for a jewellery piece, wherein the band is for receiving a head including a first formation, and the band includes:a first end having a first face including a second formation which co-operates with the first formation to hold the head relative to the band;a second end having a second face, wherein the first and second ends define a space therebetween for removably receiving the head,wherein the first formation is one of a recess or a projection member and the second formation is the other of the recess or the projection member;wherein the projection member includes a securing member which is proud of the rest of the projection member and is received in the recess when the head is received by the band,22. A jewellery piece or band according to any preceding claim wherein:the band includes two said second formations;the head includes two said first formations; andthe first face includes one of the said second formations and the second face includes the other of the said second formations.

23. A jewellery piece or band according to any preceding claim wherein the jewellery piece is:a ring;a bracelet or part of a bracelet; ora necklace or part of a necklace.

24. A head including a second formation for use with a jewellery piece or band according to any preceding claim.

25. A kit of parts including a jewellery piece, band or head according to any preceding claim, and including:a plurality of said heads which are receivable by the band; and / ora plurality of said bands which may receive the head or the plurality of heads.

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