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The Foxfire diamond is the largest known uncut, gem-quality diamond mined in North America. The diamond will be on display for three months at the Smithsonian’s National Museum of Natural History, Nov. 17 through Feb. 16, 2017. This will be the first time it has been made available to the public. Weighing more than 187 carats, the Foxfire diamond will be presented alongside the renowned Hope diamond in the Harry Winston Gallery.


Cavansite stalactite with Stilbite, Wagholi Quarry, near Pune, Maharashtra Province, India, Miniature, 4.7 x 1.5 x 1.4 cm, Stacked clusters of lustrous and translucent, rich neon blue cavansite, to 1.5 cm across, have formed a stalactite-like growth., For sale from The Arkenstone, For more details on this piece and others, visit


Azurite. Malbunka Copper Mine, Areyonga, Gardiner Range, MacDonnell Region, Northern Territory, Australie Taille=7 x 5.9 x 3.1 cm Photo © Eric C. Graff