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pink gems

Understanding Black Diamonds

Although most black diamonds on the market today are either superheated or irradiated to an almost black color, natural black diamonds do exist,…

Understanding Chameleon Diamonds

Question: Recently, someone offered me a chameleon diamond that changed shades from yellow/green to yellow. She tried to convince me that it was…

Color Grading White Diamonds

Step 4: Gem Grading Lesson 13 Back to syllabus “White,” 14kt white gold ring set with one 1.05-ct diamond and 6 10-pt diamonds, by Mark Somma.…