Gemstones: Species & Varieties

Gemstones: Species & Varieties

4.11 - 1251 ratings - Source

A curated collection of articles all about Gemstones. Useful as a quick reference guide. Pictures included for fast identification.[21] Trade terms such as balas ruby for red spinel and rubellite for red tourmaline can mislead unsuspecting buyers. Such terms are therefore discouraged from use by many gemological associations such as the Laboratory Manualanbsp;...

Title:Gemstones: Species & Varieties
Author: Charleen Kiefer - 2015-02-24

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