Gem-A guest lecturer Julia Griffith FGA DGA, provides insight into composite gemstones. This lecture covers the construction and identification of: - Opal Doublets and Triplets - Soudé Stones - Corundum Doublets - Garnet Topped Doublets (GTD) This webinar was created as part of a weekly series of webinars known as Gem-A Live. This session was brought to you in association with .
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