A method of manufacturing an article of jewelry with a druzy or geode effect, the method including: forming an adhesion mixture by mixing metal particles with a silica, shell, and/or clay with polymer, optionally in a liquid to form an adhesion paste; applying the adhesion mixture to an article of jewelry; applying a plurality of gemstones to the applied adhesion mixture to form a gemstone layer; melting the adhesion mixture without significantly melting the article of jewelry; and cooling the adhesion mixture to bond the gemstone layer to the article of jewelry.

Incident light enters a faceted gemstone and is routed along optical paths to exit the gemstone as emergent light. At least one diffraction grating is patterned on the gemstone in an asymmetrical manner relative to an axis of symmetry. The diffraction grating has a diffractive structure positioned on at least one facet for diffracting the light being routed along at least one of the optical paths to enhance color dispersion of the emergent light. The diffraction grating is the only diffraction grating to diffract the light being routed along the at least one optical path to diminish haze of the emergent light.

A light-emitting jewelry piece includes a gemstone, a head, and a mounting. The head is configured to interconnect the gemstone to the mounting. The mounting is arranged secure the light-emitting jewelry piece to a person or a personal adornment.

A light-emitting jewelry piece includes a gemstone, a head, and a mounting. The head is configured to interconnect the gemstone to the mounting. The mounting is arranged secure the light-emitting jewelry piece to a person or a personal adornment.

Provided is a method for manufacturing a synthetic gemstone, which manufactures a synthetic gemstone from a body tissue separated from a person or an animal, the method including: extracting a biological material from the body tissue; preparing a mixed material by mixing the biological material with a gemstone material; and growing a synthetic gemstone on a crystal seed as a single crystal by melting the mixed material.

A protective apparatus includes a gemstone and a foreign material encapsulated and physically isolated within an interior space of the gemstone. The gemstone is one of a precious gemstone or a semi-precious gemstone or a semi-precious stone.

A gemstone cut into a round or modified round shape have a total of 81 facets. The gemstone includes a crown and a bottom separated by a girdle. The crown includes a table surrounded by 16 star facets. The 16 star facets are surrounded by 8 primary bezel facets, and 8 secondary bezel facets. The 8 primary and secondary bezel facets are surrounded by 16 primary upper girdle facets such that the crown has a total of 48 facets surrounding the table. A bottom of the gemstone has a culet surrounded by 8 primary and 8 secondary pavilion facets. The 8 primary and secondary pavilion facets are surrounded by 16 lower girdle facets therebetween. The bottom has a total of 32 facets surrounding the culet. Including the table this gemstone may have a total of 81 facets which may be surrounded by the girdle.

The invention relates to a gemstone cut, comprising a crown having a flat table and main crown facets (10-12) being arranged around the table (1) and being inclined relative to the table, a girdle (5) at which the gemstone has its largest transverse dimension, and a pavilion adjoining the girdle from below the girdle and having main pavilion facets (7) around the girdle, whereby the number of the main pavilion facets is odd. The invention also relates to an article comprising a gemstone according to the invention and a method for improving the optical properties of a gemstone.

The present invention relates to a decorative piece comprising a support produced in a material which does not include plastic deformation and in which at least one hollow is provided, characterised in that said hollow being filled with a first material being an at least partially amorphous alloy forming a substrate in which at least one housing is provided, said at least one housing being designed so that at least one aesthetic element can be housed therein.

Proposed is a decorative element containing (a) a gemstone, (b) an electrically conductive layer on at least a partial area of the gemstone; and (c) an electronic sensor.