Here is a polished piece of opalized wood, of the Conk variety, from Virgin Valley, Nevada. It’s a great stable specimen with many colors and is polished on both sides. Name: Opalized petrified wood – Conk Locality: Virgin Valley, west of Denio, Nevada. Size: piece measures 58 x 25 x 4 millimeters. Mass: 35.6 carats. […]