A Brunnian link is a link formed from a closed loop doubled over itself to capture another closed loop to form a chain. One or more beads may be assembled to a linked item formed with Brunnian links. The beads include tapered sides to provide a curved interface that corresponds with the shape of a completed linked item.

Portable decorative element with a metal structure (2) made from cutout metal plate with decorative openings, on the back face of which there is a lining forming a plate that can be seen through these openings, that can be elastically bent (4), the back face of the metal plate comprising attachment means (10, 12) holding the lining (4) in place and clamping this lining, pressing it into contact with the back face of the structure.

Portable decorative element with a metal structure (2) made from cutout metal plate with decorative openings, on the back face of which there is a lining forming a plate that can be seen through these openings, that can be elastically bent (4), the back face of the metal plate comprising attachment means (10, 12) holding the lining (4) in place and clamping this lining, pressing it into contact with the back face of the structure.

A jewelry clasp includes a lower arm and an upper arm that are hingedly joined to each other at one respective ends thereof. A locking pin is provided adjacent a second end of the upper arm and the locking pin extends toward the respective second end of the lower arm and locked inside a locking receptacle formed adjacent a second distal end of the lower arm. The locking receptacle contains two spring wires that extend transversely to the direction of the locking receptacle, the spring wires being spaced from each other at a distance slightly smaller than the diametrical size of a pin head of the locking pin. The clasp can be used as a general jewelry closure device.

A necklace chain entangling preventer apparatus and related method of use and production for preventing necklace chains of a plurality of N greater than 1 necklaces from entangling when simultaneously worn by a user thereof, comprising a first entangling preventer half and a second entangling preventer half, each the entangling preventer half comprising: a substantially flat rigid body plate; a plate-half attachment facilitator permanently affixed to the body plate; a plurality of N substantially rigid necklace chain threading hooks permanently affixed to the body plate; a plurality of N necklace chain threading retainers permanently affixed to the body plate; and the plate-half attachment facilitators affixed to their respective rigid body plates with opposite mating configurations; and the necklace chain threading hooks positioned to vertically separate the N necklace chains from one another when the N necklaces have been threaded therethrough.

A necklace chain entangling preventer apparatus and related method of use and production for preventing necklace chains of a plurality of N greater than 1 necklaces from entangling when simultaneously worn by a user thereof, comprising a first entangling preventer half and a second entangling preventer half, each the entangling preventer half comprising: a substantially flat rigid body plate; a plate-half attachment facilitator permanently affixed to the body plate; a plurality of N substantially rigid necklace chain threading hooks permanently affixed to the body plate; a plurality of N necklace chain threading retainers permanently affixed to the body plate; and the plate-half attachment facilitators affixed to their respective rigid body plates with opposite mating configurations; and the necklace chain threading hooks positioned to vertically separate the N necklace chains from one another when the N necklaces have been threaded therethrough.

A linking element for a modular jewel includes a single and continuous body showing at least one first portion, at least one second portion and at least one third portion, wherein at least one section of the at least one first portion is in close proximity to at least one portion of the at least one second portion, the at least one first portion, the at least one second portion and the at least one third portion delimiting between them at least one first through-opening through the body, wherein the at least one first portion and the at least one second portion are separated from each other by the at least one split selectively expandable/shrinkable to delimit/occlude an access passage to the at least one through-opening.

A linking element for a modular jewel includes a single and continuous body showing at least one first portion, at least one second portion and at least one third portion, wherein at least one section of the at least one first portion is in close proximity to at least one portion of the at least one second portion, the at least one first portion, the at least one second portion and the at least one third portion delimiting between them at least one first through-opening through the body, wherein the at least one first portion and the at least one second portion are separated from each other by the at least one split selectively expandable/shrinkable to delimit/occlude an access passage to the at least one through-opening.

This invention is directed toward a piece of jewelry having one or more stackable tools. The stackable tools have the advantage of being able to be removed from the piece of jewelry, used by the wearer, and returned to the piece of jewelry without having to remove the piece of jewelry. Two of the key features of this invention, namely the stackability of the tools and the ability to remove and use the tools from the jewelry while still wearing the jewelry, are incredibly advantageous for the user. The stackability allows a user to customize the jewelry so that he or she always has the preferred assortment of tools handy when needed. The removability for use while still wearing the jewelry allows a user to avoid common mishaps, such as dropping the necklace when trying to take off a tool thereby losing one or all of the tools.

A collet capable of increasing a degree of exposure of an ornament and providing high productivity is provided. The collet includes two plate members 3 and 5 that hold an ornament 7. The respective plate members 3 and 5 include support portions 9 and 23 that each include a region with which a back surface side of the ornament 7 is in contact. The respective plate members 3 and 5 include pairs of claw portions 11a and 11b, and 25a and 25b which extend from distal ends of the support portions 9 and 23, and are formed to be able to be locked on the front surface side of the ornament 7. Furthermore, the respective plate members 3 and 5 include notched portions 21 and 37 where the support portions 9 and 23 are caused to cross each other and engage with each other.