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.

Shaped articles 42, 43 are inseparably and integrally formed of a colorless transparent material or a colored transparent material, and a peripheral surface has an uneven shape. In the shaped article 42 formed by a flat and irregular polyhedron and the article 43 formed by a plurality of recesses 44 shaped by burning, the entered light is refracted and reflected in various directions and radiated outside the shaped articles to be seen by a viewer. In the shaped article 43, a housed object 45 is visually complemented by the shadowed part of the recesses 44. Thus, the light is seen by the viewer. The visual effect of making the front surface shine brightly can be kept by dispersing and reflecting incident light. In addition, a risk of bodily injury and environmental disaster caused by light concentration can be avoided by suppressing transmission light irradiated from the irregular polyhedron and the recesses 44.

The present invention relates to a health artificial pearl and a manufacturing method therefor and, more specifically, to: a health artificial pearl formed by spray-drying and pressure-firing a functional mineral that emits anions and radiates far infrared rays, so as to form a core with high compressive strength, and by coating the surface of the core with an artificial pearl composition, which is nontoxic to the human body; and a manufacturing method therefor. The method for manufacturing a health artificial pearl comprises: (S100) a material pretreatment step of wet-grinding a functional mineral that emits anions and radiates far infrared rays so as to form a wet-ground solution, and spray drying the wet-ground solution so as to prepare a powder for press forming; (S200) a press forming step of injecting, into a press forming apparatus, the powder for press forming so as to form a core, and high-temperature-firing the core; (S300) a core polishing step of polishing the high-temperature-fired core; and (S400) a coating step of coating the polished core with an artificial pearl composition.

An ornamental device includes: diamonds disposed on a single support element in a specific physical arrangement, all the diamonds in the specific physical arrangement having a blue fluorescent equal to or stronger than strong blue, wherein all the diamonds in the specific physical arrangement shining clear under a visible light, and shining blue under ultraviolet radiation keeping the specific physical arrangement distinguished from a group of diamonds in the specific physical arrangement, the group of diamonds comprising a mixture of a diamond or diamonds having a blue fluorescence equal to or stronger than strong blue and a diamonds or diamonds not having a blue fluorescent equal to or stronger than strong blue.

One variation of a diamond composition includes carbon: including a first amount of carbon-13 isotopes and a second amount of carbon-12 isotopes; and sourced from a hydrocarbon mixture including hydrocarbons and formed via methanation of a carbon dioxide mixture. The carbon dioxide mixture: sourced from a sample of air including carbon dioxide and impurities; conveyed through a separation unit configured to remove impurities; including carbon dioxide and impurities; conveyed through a distillation column configured to regulate amounts of carbon-13 isotopes and carbon-12 isotopes; and exhibiting a target ratio of carbon-13 isotopes to carbon-12 isotopes at an outlet of the distillation column. The diamond composition: formed via chemical vapor deposition; and exhibiting an isotopic signature defining a final ratio of the first amount of carbon-13 isotopes to the second amount of carbon-12 isotopes within a first target range corresponding to the target ratio exhibited by the carbon dioxide mixture.

Provided is a method for manufacturing a synthetic gemstone from a body tissue of a person or an animal, the method including: extracting a biomaterial from the body tissue; manufacturing a raw material mixture by mixing the biomaterial with a gemstone material; and melting the raw material mixture to form a synthetic gemstone on a crystal seed.

One variation of a diamond composition includes carbon: including a first amount of carbon-13 isotopes and a second amount of carbon-12 isotopes; and sourced from a hydrocarbon mixture including hydrocarbons and formed via methanation of a carbon dioxide mixture. The carbon dioxide mixture: sourced from a sample of air including carbon dioxide and impurities; conveyed through a separation unit configured to remove impurities; including carbon dioxide and impurities; conveyed through a distillation column configured to regulate amounts of carbon-13 isotopes and carbon-12 isotopes; and exhibiting a target ratio of carbon-13 isotopes to carbon-12 isotopes at an outlet of the distillation column. The diamond composition: formed via chemical vapor deposition; and exhibiting an isotopic signature defining a final ratio of the first amount of carbon-13 isotopes to the second amount of carbon-12 isotopes within a first target range corresponding to the target ratio exhibited by the carbon dioxide mixture.

Disclosed herein are chemically configurable diamonds tailored for self-cleaning, dirt repelling, and anti-smudge technology for sensing, optical, and ornamental applications. This document describes an invention for generating chemically configurable diamonds. Applications include anti-smudge, self-cleaning, color alteration, and debris resistance for diamond for jewelry or other ornamentation, optical, quantum computing, for chemical functionalization for sensors or electronic devices that rely on chemical interactions with diamonds or defects therein. Diamond surfaces are chemically inert and therefore require chemical modification to attach secondary coatings. Secondary coatings can be varied depending on application demands. Chemical reactions are employed to modify the surface wetting properties of the diamond. The wetting properties of the diamond can lend a hydrophilic, hydrophobic, lipophobic, or lipophilic effect to the diamond, or include explicit chemical functionality, depending on the nature of the coating, and tailored to the desired application. The coated diamond is constructed by fabricating a functional base layer on the diamond and subsequently attaching the desired chemical monolayer or multilayer to that base.

An ornamental device includes: diamonds disposed on a single support element in a specific physical arrangement, all the diamonds in the specific physical arrangement having a blue fluorescent equal to or stronger than strong blue, wherein all the diamonds in the specific physical arrangement shining clear under a visible light, and shining blue under ultraviolet radiation keeping the specific physical arrangement distinguished from a group of diamonds in the specific physical arrangement, the group of diamonds comprising a mixture of a diamond or diamonds having a blue fluorescence equal to or stronger than strong blue and a diamonds or diamonds not having a blue fluorescent equal to or stronger than strong blue.

Different types of gallium nitride (GaN) gemstones can be produced synthetically for crafting jewelry. With some examples, a GaN gemstone can include a crystal (such as a single crystal that is typically used in semiconductor devices or other types of electronic components, e.g., electronic components with optical properties). The crystal of the gemstone can be grown to be relatively pure and translucent GaN as well as cut and polished to have facets of a gemstone. Also, the crystal can include doped GaN—such as GaN doped with indium or aluminum. The doping of the GaN can be to an extent to produce a visibly discernable color (such a tint of blue).