• 5/4/23

Surprise Visit to a Black Sapphire Mine in Chantaburi, Thailand.

Join Charles Lawson on an impromptu visit to a facinating little sapphire mine, not far from the city of Chantaburi in Thailand.

How is a Gemstone Report/Certificate Made? A Brief Overview of a Standard Report

Know Your Gem Dealer Episode 4: Sourcing gems with Michelle, university postgradate level gemologist

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