The Gem and Mineral Show will be held from 10 a.m. to 5 p.m. Saturday and Sunday at Solano County McCormack Hall, 900 ...
JUNEAU, Alaska — A brick-like gem billed as one of the largest opals ever found was sold for $143,750 during an auction in Alaska on Sunday. The “Americus Australis,” which weighs 11,855.28 carats, ...