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Emerald is a gemstone and a variety of the mineral beryl (Be 3 Al 2 (SiO 3) 6) colored green by trace amounts of chromium and sometimes vanadium. [1] Beryl has a hardness of 7.5–8 on the Mohs scale. [1] Most emeralds are highly included, [2] so their toughness (resistance to breakage) is classified as generally poor. Emerald is a cyclosilicate.
Emerald of Saint Louis, [5] 51.60 carats cut; discovered in Austria, probably Habachtal, resides in the National Museum of Natural History, Paris Gachalá Emerald [ 6 ] Mogul Mughal Emerald , 217.80 carats cut; mined in Colombia and cut in the Mughal empire in Hijri year 1107 (1695–1696), resides in the Museum of Islamic Art, Doha , Qatar [ 7 ...
Emerald is a gemstone and a variety of the mineral beryl (Be 3 Al 2 (SiO 3) 6) colored green by trace amounts of chromium or sometimes vanadium. [2] Beryl has a hardness of 7.5–8 on the Mohs scale. [2] Most emeralds have many inclusions, [3] so their toughness (resistance to breakage) is
An 836-pound “cursed” emerald worth nearly $1 billion will be returned to Brazil after 15 years under lock and key in Los Angeles. The 180,000-carat Bahia Emerald was smuggled out of the South ...
The Mogul Mughal Emerald is one of the largest emeralds known.. Auction house Christie's described it as follows: . The rectangular-cut emerald known as 'The Mogul Mughal' weighing 217.80 carats, the obverse engraved with Shi'a invocations in elegant naskh script, dated 1107 A.H., the reverse carved all over with foliate decoration, the central rosette flanked by single large poppy flowers ...
Red beryl, formerly known as bixbite and marketed as red emerald or scarlet emerald, is an extremely rare variety of beryl as well as one of the rarest minerals on Earth. [ 1 ] [ 2 ] : 19 The gem gets its red color from manganese ions embedded inside of beryllium aluminium cyclosilicate crystals. [ 1 ]
Emerald (Tamil: மரகதம்)is a variety of the mineral beryl (Be 3 Al 2 (SiO 3) 6) colored green by trace amounts of chromium and sometimes vanadium. [1]The hardness of Beryl is 7.5–8 on the 10 point Mohs scale of mineral hardness. [1]
A ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). Other varieties of gem-quality corundum are called sapphires. Ruby is one of the traditional cardinal gems, together with amethyst, sapphire, emerald, and diamond. [1] The word ruby comes from ruber, Latin for red.
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