Royal blue lapis lazuli, the gem variety of lazurite and one of the most beautiful opaque gemstones, is a sodium and aluminum mineral of considerable complexity. Known as “sapphires” by the ancients, the stone occurs in only a few major deposits around the world, notably Lake Baikal in Siberia, Ocalle in Chile, and the rugged Kokcha Valley of northern Afghanistan.
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(Added: 21-Jun-2005 Hits: 330)
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