Examining a rough Sapphire : GIA

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http://www.gia.edu/gia-news-research-column-Examining-Rough-Sapphire

GIA’s field gemologist shows how to examine a sapphire crystal for cracks and inclusions, which can be healed through heating with a chemical flux before the stone is cut.

EXAMINING A ROUGH SAPPHIRE

Author: Vincent Pardieu, GIA

An interesting short video clip, explains looking at a rough gem and determining how or if it can be cut.

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