minerals

The sale’s top lot was this topaz from Brazil, which drew $200,000. Images courtesy of Heritage Auctions
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Currier's legendary mineral collection earns millions

One-of-a-kind gold nugget, measuring nearly 11 inches in length and weighing 1,241 grams (39.9 troy ounces), estimate: $70,000-$100,000. Courtesy of Heritage Auctions
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Enormous 11-inch gold nugget could fetch $100K

Crystalized gold on quartz
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Crystallized gold on quartz specimen may bring $40K