You might have come across several uncut and raw precious stones at auctions, but have you ever heard about gold nuggets begin auctioned off? Well as Heritage Auctions brings forth a new Fine Minerals category. Highlighting the auction is a large Gold in Quartz nugget weighing well over 70 ounces (about 2 kg), found at the base of Colorado River canyon, Arizona. Uncovered in the winter of 1989 by amateur gold hunter Bud Guthrie, the nugget is estimated to fetch over $300,000 under the hammer.
Other interesting pieces to be auctioned include an Azurite on Malachite from the Chessy Copper Mines, Chessy, France, estimated over $15,000, and a Blue 17 x 9 x 6-inch Fluorite on Quartz, from La Viesca Mine, Asturias, Spain, worth over $300,000 among others. It is open for bids, and you can 
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