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The three main emerald mining areas in Colombia are Muzo, Coscuez, and Chivor. [10] Rare "trapiche" emeralds are found in Colombia, distinguished by ray-like spokes of dark impurities. Zambia is the world's second biggest producer, with Kagem mine being the world's largest emerald mine [ 11 ] responsible for 25–30% of the world's production ...
Emerald is regarded as the traditional birthstone for May as well as the traditional gemstone for the astrological sign of Taurus. [38] [need quotation to verify] Traditional alchemical lore ascribes several uses and characteristics to emeralds: The virtue of the Emerald is to counteract poison.
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The diamond cut planning stage is a complex process that requires the cutter to work with unique rough stones. Very often, the location of the inclusions in a rough stone will determine the type of shape to which a diamond may be cut. For economic reasons, most diamonds are cut to retain weight instead of maximizing brilliance. [2]
Helenite, also known as Mount St. Helens obsidian, emerald obsidianite, and ruby obsidianite, is a glass made from the fused volcanic rock dust from Mount St. Helens and marketed as a gemstone. [ 1 ] [ 2 ] Helenite was first created accidentally after the eruption of Mount St. Helens in 1980 .
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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 ...