A jewelry ring that includes a sleeve-like or annular substrate made of a precious metal or a precious metal alloy having a specific density 1, and which has an inner surface for contacting a finger, an outer surface, two lateral surfaces and a central cavity for accommodating the finger. A bundle of fibers is wound in multiple windings on at least a part of the outer surface. The fibers are connected to one another by a plastic adhesive having a specific density of 2<1. The fibers have a specific density 3<1. Also a method for manufacturing a jewelry ring, which includes wetting the bundle of fibers with plastic adhesive, fastening a start of the bundle to the sleeve-like or annular substrate, winding the bundle on the sleeve-like or annular substrate, applying pressure to the bundle, curing the plastic adhesive and grinding off peripheral-most fibers.

The embodiments herein disclose hypoallergenic, metal surface sealant clear aerosol composition to be used on metals (specifically jewelry) to prevent skin allergies and the process of tarnishing of metal. The method of synthesizing hypoallergenic metal surface sealant clear aerosol composition comprises the following steps. The paraloid-B-48 material (10.59 wt %) is added to ethyl acetate (31.77 wt %) slowly under constant agitation. The mixture comprising paraloid-B-48 material and ethyl acetate is agitated till no lumps are present. The butyl acetate (8.47 wt %), TAXIB Plasticizer (0.70 wt %), propylene glycol monomethyl ether (PM) acetate (19.77 wt %), ethyl acetate (28.24 wt %), Chemia #46210 Lavandin (0.42 wt %) and dimethyl ether to the mixture comprising paraloid-B-48 material and ethyl acetate are added to the mixture comprising paraloid B-48 material and ethyl acetate to obtain a composition. The composition is blended at a predetermined speed to uniformly mix the components.

A jewelry item includes a thin piece member formed from a gold alloy containing gold (Au) as a first metal element and a second metal element other than gold (Au), a frame member including a third metal element other than the first metal element and the second metal element and a fourth metal element as a metal for an alloy of the third metal, forming a bond with and surrounding a peripheral edge of the thin piece member, and a compound layer containing the first metal element, the second metal element, the third metal element and the fourth metal element is interposed between the thin piece member and the frame member.

A method of manufacturing a silicone ring consisting of two outer-band halves formed by compression silicone-molding in a first mold and an inner-band formed by placing half of the outer-bands of the ring in a second mold, placing a spacer-insert mold over the second mold, inserting a silicone rubber in the cavities of a spacer-insert mold, inserting the remaining outer-band halves into a fourth mold, inserting the three molds into a compression chamber to vulcanize the outer-band halves and the inner-band together, wherein the first and second outer-bands form a complete ring, and a symmetrical inner-band is formed in between the first and second outer-band halves.

A timepiece or jewelry component comprising a substrate and at least one decoration joined to the substrate, wherein it comprises a transparent coating covering at least one part of the substrate and at least one part of the decoration, the coating changing the perceptible color of the substrate without changing the perceptible color of the at least one decoration.

A watch or jewellery external part, in which the external part includes a substrate on a surface of which extends a coating including a tantalum Ta based nitride or oxynitride having a thickness comprised between 300 nm and 10 m and an intrinsic and saturated colour.

The invention relates to a method for epilamization of at least one portion of a substrate surface comprising the steps of: a) preparing an epilame agent b) optionally, preparing the substrate surface c) placing the substrate and the epilame agent in a chamber at ambient pressure d) introducing CO.sub.2 into the hermetically sealed chamber at a pressure comprised between 25 bar and 74 bar and at a temperature comprised between 10 C. and 80 C. for a duration comprised between 1 minute and 30 minutes, e) reducing the pressure in the chamber, and f) removing the epilamized substrate from the chamber.

A method to apply nano-crystalline diamond onto a selected substrate, including preparing Nanodiamond slurry of Nanodiamond particles dispersed in a medium. The medium may include a liquid or a sol-gel. The selected substrate is immersed in the Nanodiamond slurry for a predetermined period of time. Then the substrate is removed from the slurry. The substrate is then dried with a flow of inert gas. The substrate is left coated with a coating of the nanodiamond particles that are highly adherently held by van der Waals forces.

A sand based jewelry and methods of making sand based jewelry is provided. The jewelry having a quantity of sand mixed with a quantity of binding medium. The binding medium and sand mixture are capable of being solidified and mounted to a jewelry setting. The jewelry setting attached to a jewelry item.

A sand based jewelry and methods of making sand based jewelry is provided. The jewelry having a quantity of sand mixed with a quantity of binding medium. The binding medium and sand mixture are capable of being solidified and mounted to a jewelry setting. The jewelry setting attached to a jewelry item.