Black opals are the most valuable kind in all types of opals, fire Opal, white Opal, and more. What should the allure of this stone is the stone back each own a beauty totally separate and converge in full color of the other gemstones combined. And even though the minerals forming rocks everywhere on Earth but to find a quality Opal gemstones as well as hard as finding the bottom of the hot metal. Now 97% of cat's eye in the world come from the exploitation of mines in Australia. 3% of the remainder coming from Mexico. Internal structure of Opal has light scattering ability creates fine color spectrum very nice. Each stone has a different and scattering effects when observed from different angles, this color changing beam. The black cat's eye contains less water and less brightly colored than the rift. Due to the characteristic black should black cat's eye can be easily distinguished from other rocks, however only the new scientific testing methods to determine the stone's natural, yet treated the stone would be artificial and processed.
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