paraiba tourmalines

photo credit:

Photographed from the GIA Collection for the CIBJO project from the Dr. Eduard J. Gubelin Collection. Collection# 33379, 2.59 ct turquoise blue triangle cut Paraíba tourmaline; Collection# 33382, 3.28 ct electric blue drop cut Paraíba tourmaline; and Collection# 33378, 3.68 ct green pear cut Paraíba tourmaline.

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