Lightning Ridge Black/Dark Base knobby opal rough 9.00cts Lots nice Blue colours Some Greens showing 18x11x9mm Lot B4-A178 wk_auction Grade Key (Gamble Grade System):🎲

Grade Key (Gamble Grade System):🎲 A+ – Clean visible bars or faces with excellent potential for high-grade gems🔥 A – Visible colour with great cutting promise

00ct Lightning Ridge split knobby pair reveals two vibrant Blue bars ready to be explored

making it a standout piece for lapidary enthusiasts

tiny gem potential

Size: 14x11x6mm

Lightning Ridge Black/Dark Base knobby opal rough 9.00cts Lots nice Blue colours Some Greens showing 18x11x9mm Lot B4-A178 wk_auction Grade Key (Gamble Grade System):🎲Lightning Ridge Black Dark Base Knobby Opal Rough 9. 00cts Lot: B4 A178Size: 18 x 11 x 9mmWeight: 9. 00 caratsOrigin: Lightning Ridge, Australia This Black Dark base knobby opal rough from Lightning Ridge showcases lots of nice blue colors with some green fire appearing, making it a fantastic piece for lapidaries and collectors. With its natural formation and strong play of color, this opal holds great potential for cutting and uncovering even more