Online lesson: EMERALDS (HOME GEMMOLOGY SESSION 5) Emerald as a gem variety of beryl. Tradition and lore. Brief history of emerald in jewellery. Classic and modern occurrences and gemmological challenges in origin determination. Most common clarity treatments, imitations and synthetic emeralds.
APR 9, 9:00 AM or 7:00 PM (Lisbon/London timezone)
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