Lightning Ridge Untouched Dark base Knobby rough 7.50cts Blue fires sold as gamble 13x12x9mm Lot B4-A197 wk_end_auction 25cts Coober Pedy

25cts Coober Pedy

This huge 145-carat seam opal rough from Coober Pedy features a flat bar with blue colors waiting to be explored

40cts Crystal on Boulder Backing

Excellent potential for cutting and polishing

00ct untouched dark base knobby opal rough features bright blue colour ready to be chased and revealed

Lightning Ridge Untouched Dark base Knobby rough 7.50cts Blue fires sold as gamble 13x12x9mm Lot B4-A197 wk_end_auction 25cts Coober PedyLightning Ridge Untouched Dark Base Knobby Opal Rough 7. 50cts Lot: B4 A197Size: 13 x 12 x 9mmWeight: 7. 50 caratsOrigin: Lightning Ridge, Australia This untouched dark base knobby opal rough from Lightning Ridge features blue fire waiting to be revealed, making it an exciting gamble stone for lapidaries and collectors. With its natural formation and strong cutting potential, this piece holds the possibility of uncovering something truly special.