Gemology: Identifying and Valuing Gemstones for Investors

Gemology is the scientific study and identification of gemstones; investing in which can be risky for nonprofessionals.

What's behind our obsession with gems?

Gemstones: Identifying and Using the World's Most Fabulous Gems: Judith Crowe: Herbert Press

Synthetic Gemstones, Blog

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Comprehensive Guide to Gemstone Certification: Ensuring Authenticity and Quality, by Mikel SEO