Among the collection assembled by Dr Edward Gübelin are a number of uncommon gemstones from many worldwide localities.
Read MoreHoney yellow. Fiery orange. Cyclamen pink. Icy blue. In warm or cool tones, topaz is a lustrous and brilliant gem
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Topaz actually has an exceptionally wide colour range that, besides brown, includes various tones and saturations of blue, green, yellow, orange, red, pink, and purple. Colourless topaz is plentiful, and is often treated to give it a blue colour
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Most authorities agree that the name topaz comes from Topazios, the old Greek name for a small island in the Red Sea, now called Zabargad. (The island never produced topaz, but it was once a source of peridot, which was confused with topaz before the development of modern mineralogy.)
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Circumnavigate the boreal reaches of the globe to explore gems from polar regions.
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Geologist and publisher earns his GG so he can share more information on gem materials with visitors to Geology.com, his Earth Science website.
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Betty Sue King shares her expertise at chapter meetings, on pearl trips and with donations to the Tucson auctions – all in support of the GIA alumni.
Read MoreAlumni chapter leader wants to help develop Mexico’s third-most populous city into a thriving jewellery design and manufacturing hub.
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Aesthetically pleasing inclusions are found in topaz from Pakistan’s Shigar Valley.
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