Indian Birthstone Opal Diamond Fashion 2015 Gold Wedding Jewellery.
By Aamir Mannan.
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Multi-Colored solid black opal cabochon from Lightning Ridge, NSW
Australia produces around 97% of the world's opal. 90% is called 'light opal' or white and crystal opal. White makes up 60% of the opal productions but cannot be found in all of the opal fields. Crystal opal or pure hydrated silica makes up 30% of the opal produced, 8% is black and only 2% is boulder opal.
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