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.

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.

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.

Disclosed herein are coated gemstones, coatings for gemstones, methods of coating gemstones, and methods of using coatings on gemstones to avoid blemishes on gemstones. In some embodiments, diamonds are functionalized with anchor molecules that bind hydrophilic cyclodextrin molecules to confer hydrophilicity on the diamond. In some embodiments, the diamonds resist dirt and grime build-up.

The invention discloses a round or a heart shaped gemstone (FIG. 1) (FIG. 8) visually encompassing a heart shape (FIG. 7,15:AD) within, and its method of manufacture. The gemstone comprises of an upper double crown table facet (A), a lower pavilion (C) with a culet (D) at its lower tip, and a girdle (B) separating the upper crown table facet from the pavilion. The pavilion (FIG. 1) comprises of pavilion main facets, lower girdle facets and short half facets. The short arms (P) of the kite shaped pavilion main facets meet at the culet, long arms (Q) meet at 1.sup.st points (R) and the short arms and long arms of each pavilion main facet meet at 2.sup.nd points (S) at specific girdle depths. The lower girdle facets (L) and the respective short half facets (T) are faceted from the lower girdle facets at 1.sup.st pavilion angles along a cable (R) joining the 1.sup.st points. The 2.sup.nd pavilion short half angles (Z) along a cable joining the 2.sup.nd points of the pavilion main facets are less than the 1.sup.st pavilion angles. The girdle depth of the 1.sup.st point of one pair of symmetrical pavilion main facets is 0.5% to 10% less than the remainder pavilion main facets.

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 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 is directed to a gemstone including an image formed by one or more facets cut into an upper portion of the gemstone. The gemstone further includes one or more upper light injectors cut into the upper portion of the gemstone. The one or more upper light injectors are angled to direct light towards the image. The gemstone also includes one or more lower light injectors cut into a lower portion of the gemstone. The one or more lower light injectors are angled to direct light towards the image.

Emerald-cut diamond with length/width of 1.35 to 1.40; table of 55 to 60 percent; corner ratio of 13.5 to 14.5 percent; girdle thickness up to 3 percent; crown main angle of 28 to 45 degrees; first crown break angle of 2 to 6 degrees; second crown break angle of 2 to 6 degrees; pavilion main angle of 43 to 48 degrees; first pavilion break angle of 2 to 5 degrees; and second pavilion break angle of 2 to 5 degrees. Diamonds cut in accordance with these parameters may have light performance 0-grade domains on a grade map with wide crown and pavilion mains ranges. A method cuts the diamond according to the parameters, and may include selecting crown and pavilion main angles from the map, and cutting the diamond sufficiently close to the selected cutting parameters to obtain the light performance grade of 0.

The embodiments set forth a jewelry accessory setting for an array of stones, such as gemstones including for instance diamonds, where said stones are arranged in accordance to a gradient of known quality, such as cut, clarity, carat or color. The jewelry accessory may include bars between each stone to prevent color contamination. The jewelry accessory alternatively sets forth natural stones together with treated or synthetics stones. The jewelry accessory is useful when utilized in a method of valuing stones of unknown quality, such as by a purchaser assessing the value of a piece of jewelry with stones of unknown quality by comparing such potential purchase to the jewelry accessory set forth herein.