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Main sapphire-producing countries. Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminium oxide (α-Al 2 O 3) with trace amounts of elements such as iron, titanium, cobalt, lead, chromium, vanadium, magnesium, boron, and silicon.
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National Museum of Natural History, Washington [8] Star of Artaban: Sri Lanka 287 carats (57.4 g) Star Blue-violet National Museum of Natural History, Washington [9] Star of Bombay: Sri Lanka 182 carats (36.4 g) Star Blue-violet National Museum of Natural History, Washington [10] Ruspoli Sapphire: 136.9 carats (27.38 g) [11] Stuart Sapphire ...
This is a list of sovereign states in the 1990s, giving an overview of states around the world during the period between 1 January 1990 and 31 December 1999. It contains 241 entries, arranged alphabetically, with information on the status and recognition of their sovereignty .
Roughs from the English Mine were shipped to London and sold in Europe, often with claims they were sapphires from the Far East, while the American Mine had difficulty marketing its gems within the United States. The American Sapphire Company, which used local gemcutters from Great Falls, went bankrupt in 1909; a new firm, the Yogo American ...
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This category includes articles that are lists of Americans, people who are now living, or once lived, in the United States. Subcategories This category has the following 10 subcategories, out of 10 total.
Fancy sapphires of various colours are also available. In the United States, blue sapphire tends to be the most popular and most affordable of the three major precious gemstones (emerald, ruby, and sapphire). Turquoise Turquoise is found in only a few places on Earth, and the world's largest turquoise-producing region is the southwest United ...