摘要:
Various embodiments described herein comprise a gemstone or other piece of jewelry, which incorporates one or more diffractive optical elements to enhance the fire displayed by the gemstone. In certain embodiments, the diffractive optical element comprises a diffraction grating etched on one or more facets of the gemstone.
摘要:
A method of making fancy orange synthetic CVD diamond material is described. The method comprises irradiating a single crystal diamond material that has been grown by CVD to introduce isolated vacancies into at least part of the CVD diamond material and then annealing the irradiated diamond material to form vacancy chains from at least some of the introduced isolated vacancies. Fancy orange CVD diamond material is also described.
摘要:
Articles of Jewelry having colored precious stones designed, priced, and sold at retail locations. The articles of jewelry may be imaged and priced according to a consumer's input on the length at the retail locations having a commitment to purchase the article of jewelry based on the image provided and selected. The goal is to meet the needs of the customers through high quality jewelry at affordable prices challenging competitors by showcasing the industry through an outstanding example of excellent, ethics, and professionalism in all business endeavors. Together, we will work to make the dreams of everyone associated with Prophetess Theresa Jewelry Collection walk in their purpose in style.
摘要:
The present invention relates to a kit for visualising a cutting regime of a rough diamond comprising: (a) a solid, translucent substance into which three dimensional images are marked, said markings indicating: (i) the outer surface of the original rough diamond, (ii) optionally, the internal defects of the rough diamond, said markings indicating the position and shape of said defects with respect of the rough diamond,(iii) optionally, the outer surface of one or more cut diamonds, said markings indicating the position and shape of said cut diamonds with respect of the rough diamond, and (b) solid, physical representations of one or more diamonds indicated by the markings of item (iii), and/or solid, physical representation of the rough diamond, corresponding to the markings of item (i), and/or one or more actual cut diamonds indicated by the markings of item (iii). The present invention further relates to a computer readable medium comprising data regarding the cut stone and the original rough diamond.
摘要:
A method and an apparatus for laser marking indicia in the volume of gemstones such as diamonds, the indicia being made up of a plurality of microscopic dot-shaped marks whose build-up can be initiated by exposing naturally-occurring internal defects or impurities in the volume of a gemstone to a tightly focused train of laser pulses. Authentication data is encoded in the gemstone from the relative spatial arrangement of the dot-shaped marks that form the indicium. Taking advantage of the presence of otherwise invisible defects in the gemstone allows for inscribing indicia with laser pulses carrying energies substantially lower than the threshold energy required for inscribing in the volume of a perfect gemstone material. The marking process is then much less susceptible to inflict damages to the surface of the gemstone, and the marking can be performed using a broad variety of femtosecond laser systems. The dot-shaped marks engraved at a depth below the surface of a gemstone can be made undetectable with the unaided eye or with a loupe by limiting their individual size to a few micrometers, while devising indicia made up of only a few marks. As a result, the marking does not detract from the appearance and value of the gemstone. The procedure for laser marking accounts for the random spatial distribution of the defects present in natural gemstones as well as for their strongly localized character. The presence of an indicium can be detected by using a dedicated optical reader that can be afforded by every jewellery store.
摘要:
Various embodiments described herein comprise a gemstone or other piece of jewelry, which incorporates one or more diffractive optical elements to enhance the fire displayed by the gemstone. In certain embodiments, the diffractive optical element comprises a diffraction grating etched on one or more facets of the gemstone.
摘要:
An article of jewelry including a body having an outer major surface and a decorative pattern formed on the outer surface of the body, and a method for forming the decorative pattern, the pattern including pairs of intersecting grooves and an optically transparent synthetic decorative element formed in a respective well created by the intersection of each pair of intersecting grooves.
摘要:
This invention relates to diamond and more particularly to diamond produced by chemical vapour deposition (hereinafter referred to as CVD). According to a first aspect of the invention, there is provided a layer of single crystal CVD diamond of high quality having a thickness of at least 2 mm.
摘要:
An article of jewelry including a body having an outer major surface and a decorative pattern formed on the outer surface of the body, and a method for forming the decorative pattern, the pattern including pairs of intersecting grooves and an optically transparent synthetic decorative element formed in a respective well created by the intersection of each pair of intersecting grooves.
摘要:
A diamond has a pavilion (22) with a plurality of facets (32) disposed from a girdle (26) to a culet (34). A dome-shaped crown (24) is disposed above the girdle. The dome-shaped crown has a plurality of rows of facets (40, 42) cut with a plurality of monotonically decreasing angles to form a stepped contour from the girdle to an apex of the dome-shaped crown. A star-shaped top-center facet is disposed at the apex of the crown. The facets of the pavilion are symmetrically disposed and extend continuous from the girdle to the culet. The plurality of sets of facets in the crown from the girdle to the apex of the crown are cut with monotonically decreasing angles, such as 90, 75, 65, 55, 45, 35, 30, 25, 20, 15, and 10 degrees, respectively.