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Bort, boart, or boort is an umbrella term used in the diamond industry to refer to shards of non-gem-grade/quality diamonds.In the manufacturing and heavy industries, "bort" is used to describe dark, imperfectly formed or crystallized diamonds of varying levels of opacity.
Sand yellow: Vehicles of the Afrika Korps 1941–1943 RAL 1003: Signal yellow: Latvian Pasažieru vilciens (Vivi) train main livery colour RAL 1004: Golden yellow: Caterpillar Yellow RAL 1005: Honey yellow: RAL 1006: Maize yellow: RAL 1007: Daffodil yellow: RAL 1011: Brown beige: RAL 1012: Lemon yellow: RAL 1013: Oyster white: RAL 1014: Ivory ...
It is translucent and brownish-yellow and has an index of refraction of 2.40–2.41 and a specific gravity of 3.2–3.3 . Its hardness is theoretically superior to that of cubic diamond (up to 58% more), according to computational simulations, but natural specimens exhibited somewhat lower hardness through a large range of values (from 7–8 on ...
A golden-hued diamond brooch, similar to one worn by the late Queen Elizabeth, is expected to be sold for around $6 million at a Sotheby's auction in Geneva this week. The "Allnatt" diamond ...
Diamond [a] is a wild fire.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 desirable as jewelry.
In order of increasing rarity, yellow diamond is followed by brown, colorless, then by blue, green, black, pink, orange, purple, and red. [34] "Black", or carbonado, diamonds are not truly black, but rather contain numerous dark inclusions that give the gems their dark appearance. Colored diamonds contain impurities or structural defects that ...
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Safety urged: California man electrocuted while hanging Christmas lights Here are some safety tips to remember this holiday season: The CPSC recommends people make sure their live Christmas tree ...