Opals
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Black opals have the most striking colors and are more valuable than Crystal Opals or White Opals. How the opal is cut and how the light is refracted determines how many colors will be seen in the opal.
Although opals can be found in both South America and Australia, 95% of the world's opals are mined in Australia. The story of how opals were initially created is a fascinating one.
Over 100 million years ago Central Australia was covered by an inland sea and sediment saturated with silica surrounded the shoreline. After the sea receded to become the Artesian basin, natural conditions released the silica into cracks in rocks, layers in the clay, and fossils.
Australian Opals formed in those cracks, making opals one of the few to form in sedimentary rock. Even today, opals contain 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
White or Black Opals make a great gift for a friend, loved one, or as an indulgent gift for yourself!
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