Bi-Colored Sapphire

Posted on September 1, 2018 by Çigdem Lüle, PhD., FGA, GIA GG, DGA

Ruby and blue sapphire may be the most popular varieties of corundum but nature is capable of producing other interesting varieties too. Although commonly known for tourmalines (watermelon) and quartz (ametrine), multicolored examples exist in…

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