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Tag Archives: tourmaline varieties
Conference to Focuses on Tourmaline
The CIBJO, the World Jewellery Confederation, has announced that its third annual gemological mini-conference in May will focus on tourmaline. Tourmaline is a mineral group that includes gemstones of many colors sourced on all five continents. It is available to … Continue reading
Posted in Gemstones, Reference
Tagged tourmaline, tourmaline varieties