The Aga Khan Emerald, a rare 37.41-carat square-cut green gemstone, has become the most expensive emerald ever sold at auction,…
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Browsing: Gemstones
A dispute over the ownership and value of the 70-carat “Idol’s Eye” diamond has brought two branches of Qatar’s royal…
Nivoda has announced a major expansion of its gemstone inventory, now featuring more than 80,000 gemstones across 25 varieties. The available…
The Gübelin Gem Lab with its three lab locations in Hong Kong, Switzerland and New York has launched its new…
In a recent event at the Rice Northwest Museum of Rocks & Minerals in Hillsboro, Oregon, a 703-carat tanzanite carving,…