Uncommon specimen of vanadinite and descloizite found in the Mammoth-St. Anthony Mine, Pinal County, Arizona, and part of the Currier Collection.
Rock H. Currier holds a world-class topaz specimen, weighing seven pounds, found at the Xanda Mine, Brazil. The specimen is one of the featured lots in the Aug. 26 auction and carries an estimate of $40,000-$60,000.
ALL PHOTOS COURTESY HERITAGE AUCTIONS