GIA’s current distinguished research fellow has represented the Institute’s gemmological excellence around the world for the past four decades.
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Examines Jaipur’s role as a coloured stone cutting and jewellery manufacturing centre, with profiles of 17 companies and their factory, trading and retail operations.
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G&G announces the winners of the Dr Edward J. Gübelin Most Valuable Article Awards for 2019.
Read MoreMany people have heard of zircon but never seen it. This is mostly because of colourless zircon’s wide use as a diamond simulant in the early 1900s.
Read MoreTurquoise is one of the world’s most ancient gems. Archaeological excavations revealed that the rulers of ancient Egypt adorned themselves with turquoise jewellery, and Chinese artisans were carving it more than 3,000 years ago.
Read MoreSomewhere in Brazil in the 1500s, a Spanish conquistador washed the dirt from a green tourmaline crystal and confused the vibrant gem with emerald. His confusion lived on until scientists recognised tourmaline as a distinct mineral species in the 1800s.
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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.)
Read MoreTanzanite is relatively new to the coloured stone galaxy. Almost overnight, tanzanite became popular with leading jewellery designers and other gem professionals, as well as with customers who had an eye for beautiful and unusual gems.
Read MoreSpinel is a good candidate for the title of “History’s Most Under-appreciated Gem”. Some ancient mines that supplied gems for royal courts from Rome to China produced spinel, but it was usually confused with better-known stones like ruby and sapphire.
Read MoreTraditionally, sapphire symbolises nobility, truth, sincerity and faithfulness.
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