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Monthly Archives: December 2013
Stars among gems
Stars are rare among gems, but given the right conditions, the right crystallographic structure, the right gem, and the right inclusions, all working together, a gem might exhibit a star. These four star sapphires are shown in a group, a … Continue reading
Pleochroism in tanzanite
Tanzanite is a gem noted for its bright colour, its high degree of clarity, and its almost unique source. Tanzanite is an unusual gem because it is found near Arusha, Tanzania, and really not in any commercial quantities anywhere else. … Continue reading
Posted in Gemmology, Jewellery
Tagged Pleochroism, Tanzanite, Tiffany & Co.
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