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The 'Infinity Isle of Man' brooch design outlines the Island with four gems (Blue Topaz, Citrine, Amethyst and Emerald) representing the towns of Ramsey, Peel, Castletown and the city of Douglas. The colours of the stones were selected to represent Manx tartan. [112]
Topaz is a silicate mineral made of aluminum and fluorine with the chemical formula Al 2 Si O 4 (F, OH) 2.It is used as a gemstone in jewelry and other adornments. Common topaz in its natural state is colorless, though trace element impurities can make it pale blue or golden brown to yellow-orange. [7]
The topaz in the Field Museum (2009) The Chalmer's Topaz is a topaz gem weighing 5,899.5- carats located in Chicago, Illinois ' Grainger Hall of Gems, in the Field Museum of Natural History . It was named for former Field Museum trustee William J. Chalmers and his wife Joan Chalmers, who established a fund used to purchase gemstones for the ...
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In 2015, Blue Nile reported net sales of US$473 million and net income of US$9.7 million. [1] Blue Nile promotes itself as a supplier of ethically sourced diamonds and endorses a zero-tolerance policy towards conflict diamonds. [9] In the summer of 2015, Blue Nile opened their first showroom at Roosevelt Field Mall on Long Island, New York.
The most commonly irradiated gemstone is topaz, which usually becomes blue after the process. [3] Intensely blue topaz does not exist in nature and is the result of artificial irradiation. [ 27 ] According to the American Gem Trade Association, approximately 30 million carats (6,000 kg or 13,000 lb) of topaz are irradiated every year globally ...
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