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  2. Carbonado - Wikipedia

    en.wikipedia.org/wiki/Carbonado

    Carbonado, commonly known as black diamond, is one of the toughest forms of natural diamond. It is an impure, high-density, micro-porous form of polycrystalline diamond consisting of diamond, graphite , and amorphous carbon , with minor crystalline precipitates filling pores and occasional reduced metal inclusions. [ 1 ]

  3. Diamond (gemstone) - Wikipedia

    en.wikipedia.org/wiki/Diamond_(gemstone)

    Diamond[a] is a gemstone formed by cutting a raw diamond. Diamonds are one of the best-known and most sought-after gems, and they have been used as decorative items since ancient times. The hardness of diamond and its high dispersion of light —giving the diamond its characteristic "fire"—make it useful for industrial applications and ...

  4. Diamond - Wikipedia

    en.wikipedia.org/wiki/Diamond

    Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Diamond as a form of carbon is a tasteless, odourless, strong, brittle solid, colourless in pure form, a poor conductor of electricity, and insoluble in water. Another solid form of carbon known as graphite is the chemically stable ...

  5. Korloff Noir - Wikipedia

    en.wikipedia.org/wiki/Korloff_Noir

    Korloff Noir. The Korloff Noir is one of the world's largest known black diamonds. It is an 88-carat diamond, with 57 edges. Before it was cut and polished, it had 421 carats. It is named for the Korloff -Sapojnikoff family, members of the Russian nobility, who once owned it. In 1978, Daniel Paillasseur, a French jeweller, purchased it. [1]

  6. Material properties of diamond - Wikipedia

    en.wikipedia.org/wiki/Material_properties_of_diamond

    Massive, microcrystalline, opaque black. Diamond is the allotrope of carbon in which the carbon atoms are arranged in the specific type of cubic lattice called diamond cubic. It is a crystal that is transparent to opaque and which is generally isotropic (no or very weak birefringence). Diamond is the hardest naturally occurring material known.

  7. Diamond enhancement - Wikipedia

    en.wikipedia.org/wiki/Diamond_enhancement

    Diamond enhancement. Diamond enhancements are specific treatments, performed on natural diamonds (usually those already cut and polished into gems), which are designed to improve the visual gemological characteristics of the diamond in one or more ways. These include clarity treatments such as laser drilling to remove black carbon inclusions ...

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