Opals
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Opals come in many different types, including the Fire opal, Black opal, Boulder Opal, Milk Opal, and White Opal. Australia is the classic country from which 95% of all Fire Opals are mined.
Although opals can be found in both South America and Australia, 95% of the world's opals are mined in Australia. Over 100 million years ago Central Australia was covered by an inland sea and sediment saturated with silica surrounded the shoreline. Who would have guessed this silica to make the gorgeous gemstone opals we see today?
After the sea receded to become the Artesian basin, natural conditions released the silica into cracks in rocks, layers in the clay, and fossils Opal formed in those cracks, making this gemstone one of the few to form in sedimentary rock.
Even today, opal contains 6-10 percent water, leftovers from that sea from which it was created.
Birthstone:October
Anniversary:14th, 18th, 34th.
Mohs Scale:5.5-6
Worth:Medium
Black opals have the most striking colors and are more valuable than Crystal Opal or White Opals. How opals are cut and how the light is refracted determines how many colors will be seen in the opal. Opals make a great gift for a friend, loved one, or as an indulgent gift for yourself!
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