“Keeping an American Treasure for the American people”
Here’s another gem of a tale that really crystallizes why Tucson is central to major specimens of world-class gems, minerals & fossils trading hands…
This 8,000 pound mammoth crystal found in Arkansas in 2016 by Ron Coleman Mining, went to Tucson for sale, sold to private collectors, Patricia and Michael Berns, who donated the piece to the Smithsonian Museum of Natural History in Washington, DC.
Visit the Ron Coleman Mining showroom during the 2026 Tucson Gem, Mineral & Fossil Show, January 29, 2026, through February 15, 2026 at The Co-op Mineral & Fossil Galleries, 1635, North Oracle Rd. While you’re there, wish the Co-op on their 30th Anniversary!!…