Thursday, October 22, 2015

Published 1:12 PM by with 0 comment

Finding Ocean Inside Opal... Amazing

 Opal is a unique gem that is found primarily in Australia. The national gemstone of the country, opal is a hydrated amorphous form of silica. The water content of an opal can range from 3% to 21% and is commonly found alongside limonate, sandstone, marl, rhyolite and basalt.



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