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RE: What Does Make "BLUE SAPPHIRE" Look Fascinating and Expensive ?

in #science7 years ago

Maybe i dont know alot bout blue saphire @jamhuerySafir mining in Padar lasts for several decades. Unfortunately the best quality stones of this area are generated relatively only in the first three decades of mining activity.

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blue sapphire was aluminium oxide contain impurities that change corundum to any color

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