Provided is a gemstone treated with a cut expressing a reflected image pattern not recognized before, wherein the gemstone includes the crown 100 having the table 110 and plural bezel facets 130, and the pavilion 200 having the culet 210 and plural main facets 220; the girdle 300 is formed between the crown 100 and the pavilion 200; a direction of a horizontal component of an inclination direction of the bezel facet 130 from the table 110 to the girdle 300 is set to be different from a direction of a horizontal component of an inclination direction of the main facet 220 from the culet 210 to the girdle 300; and inclination angles of the bezel facet 130 and the main facet 220 are set so that a light that enters the table 110 is reflected by two of the main facets 220 and emitted from the bezel facet 130.

Provided is a gemstone treated with a cut expressing a reflected image pattern not recognized before, wherein the gemstone includes the crown 100 having the table 110 and plural bezel facets 130, and the pavilion 200 having the culet 210 and plural main facets 220; the girdle 300 is formed between the crown 100 and the pavilion 200; a direction of a horizontal component of an inclination direction of the bezel facet 130 from the table 110 to the girdle 300 is set to be different from a direction of a horizontal component of an inclination direction of the main facet 220 from the culet 210 to the girdle 300; and inclination angles of the bezel facet 130 and the main facet 220 are set so that a light that enters the table 110 is reflected by two of the main facets 220 and emitted from the bezel facet 130.

The invention relates to marks used for marking gemstones, including diamonds or brilliants, and carrying information for various purposes, for example, identification codes. In particular, the marks are invisible to the naked eye, using magnifying glasses and various types of microscopes. The marks are located inside the volume of diamonds or brilliants without affecting their characteristics, resulting in damage to the quality of diamonds or brilliants. An optically permeable mark located inside the diamond or brilliant volume is disclosed. The mark contains predefined encoded information and consists of a given set of optically permeable elements of micron or submicron size, which represent areas of increased concentration of atomic defects in the diamond or brilliant crystal lattice. The atomic defects in the diamond or brilliant crystal lattice are vacancies and interstitials, wherein said information is encoded in at least two areas of increased concentration of said atomic defects.

The invention relates to marks used for marking gemstones, including diamonds or brilliants, and carrying information for various purposes, for example, identification codes. In particular, the marks are invisible to the naked eye, using magnifying glasses and various types of microscopes. The marks are located inside the volume of diamonds or brilliants without affecting their characteristics, resulting in damage to the quality of diamonds or brilliants. An optically permeable mark located inside the diamond or brilliant volume is disclosed. The mark contains predefined encoded information and consists of a given set of optically permeable elements of micron or submicron size, which represent areas of increased concentration of atomic defects in the diamond or brilliant crystal lattice. The atomic defects in the diamond or brilliant crystal lattice are vacancies and interstitials, wherein said information is encoded in at least two areas of increased concentration of said atomic defects.

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 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 to 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 to secure the light-emitting jewelry piece to a person or a personal adornment.

A method for rendering a gemstone traceable, includes the steps: providing an invisible marker, wherein the marker is unambiguously identifiable, fastening the marker in a placement location of the gemstone, and acquiring marking information that includes that this unambiguously identifiable marker is fastened to this gemstone. The marker can be transported to the placement location in a manner in which it is suspended in a carrier fluid. An additive, for example a primer or a starting material for a surface coating of at least a part surface of the placement location, can be added to the carrier fluid.

A method for rendering a gemstone traceable, includes the steps: providing an invisible marker, wherein the marker is unambiguously identifiable, fastening the marker in a placement location of the gemstone, and acquiring marking information that includes that this unambiguously identifiable marker is fastened to this gemstone. The marker can be transported to the placement location in a manner in which it is suspended in a carrier fluid. An additive, for example a primer or a starting material for a surface coating of at least a part surface of the placement location, can be added to the carrier fluid.

The present disclosure describes a method for making fused meteorite, a method for bonding the fused meteorite to an article jewelry, and articles of jewelry comprising fused meteorite.