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.

A gemstone includes a crown, a pavilion, and a girdle disposed between the crown and the pavilion. The girdle has an elliptical cross-section with a major axis and a minor axis. The surface of the gemstone is generally divided into a number of groups of interlocking facets disposed at a variety of angles. The groups of facets comprising the surface of the crown generally include star facets, upper intermediate crown facets, lower intermediate crown facets, main crown facets, and upper girdle facets. The upper girdle facets generally abut an upper edge of the girdle. The groups of facets comprising the surface of the pavilion include culet-adjacent facets, candle facets, main pavilion facets, and lower girdle facets. The lower girdle facets generally abut a lower edge of the girdle.

A gemstone includes a crown, a pavilion, and a girdle disposed between the crown and the pavilion. The girdle has an elliptical cross-section with a major axis and a minor axis. The surface of the gemstone is generally divided into a number of groups of interlocking facets disposed at a variety of angles. The groups of facets comprising the surface of the crown generally include star facets, upper intermediate crown facets, lower intermediate crown facets, main crown facets, and upper girdle facets. The upper girdle facets generally abut an upper edge of the girdle. The groups of facets comprising the surface of the pavilion include culet-adjacent facets, candle facets, main pavilion facets, and lower girdle facets. The lower girdle facets generally abut a lower edge of the girdle.

Presented is a diamond comprising a table, a crown, a girdle, a pavilion, and a culet. The table is rectangular, having a length and a width. The table comprises a first side, adjacent to a second side, adjacent to a third side, and adjacent to a fourth side. The first side of the table is directly connected with a first facet of the girdle. The second side of the table is directly connected with a second facet of the girdle. The crown comprises a plurality of facets connecting the third side and the fourth side of the table to the girdle. The pavilion is connected to the girdle. The culet is positioned directly below a point having a 1% deviation from the center of the girdle.

What is provided are commemorative pieces of jewelry that include food, beverage, and/or botanical extracts and methods of making the same. An embodiment of a piece of jewelry comprises a mixture including one or more first layers of cured resin and an extract, wherein the mixture is inlaid in the piece of jewelry, and wherein the extract is derived from a food, an alcoholic beverage, a non-alcoholic beverage, a plant or a botanical. The piece of jewelry further comprises one or more second layers of cured resin.

An interchangeable piece of jewelry including a base and a head mount. The base includes an inner wall that defines a receptacle. The head mount includes a setting and an insert, the setting configured to retain a jewel therein and the insert being dimensioned to sit within the receptacle of the base. When the insert rests within the receptacle, an outer wall of the insert at a distal end contacts the inner wall of the receptacle such that the head mount is releasably secured within the receptacle, and the outer wall of the insert that is adjacent a proximal end and within the receptacle is spaced apart from the inner wall.

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).

Single integrated transparent gemstones and methods for constructing single integrated transparent gemstones. The single integrated transparent gemstone includes a first transparent gemstone, a copyright protected element, and a second transparent gemstone. The first transparent gemstone includes a first internal side. The copyright protected element is etched on the first internal side. The copyright protected element is owned by a third party. The second transparent gemstone includes a second internal side. The second transparent gemstone is fused together with the first transparent gemstone. The second internal side is aligned with the first internal side such that the copyright protected element does not extend beyond a perimeter of the second internal side.

A decorative composite body includes a glass body and a plastic partly enclosing the glass body, wherein part of the surface of the glass body is arranged on the outside of the decorative composite body, wherein at least two adjacent glass and plastic areas arranged on the outside of the composite body are ground in the composite state, wherein areas of the glass body adjacent to the plastic are at least partly mirrored.

The present disclosure relates to a method of making fancy orange synthetic CVD diamond material. Among other things, the method may involve (i) providing a single crystal diamond material that has been grown by CVD and has a [N.sub.s.sup.0] concentration less than 5 ppm; (ii) irradiating the provided CVD diamond material so as to introduce isolated vacancies V into at least part of the provided CVD diamond material such that the total concentration of isolated vacancies [V.sub.T] in the irradiated diamond material is at least the greater of (a) 0.5 ppm and (b) 50% higher than the [N.sub.s.sup.0] concentration in ppm in the provided diamond material; and (iii) annealing the irradiated diamond material to forming vacancy chains from at least some of the introduced isolated vacancies.