Lightning Ridge Untouched Crystal knobby opal rough 4.75cts Blues to explore sold as gamble 13x13x6mm Lot B4-A193 wk_end_auction The material is raw and

The material is raw and still has much to reveal

Defined flat bar with blue fire

This piece has great potential for cutters looking for blue-on-dark contrast

Moderate risk with good display potential

Lightning Ridge Untouched Crystal knobby opal rough 4.75cts Blues to explore sold as gamble 13x13x6mm Lot B4-A193 wk_end_auction The material is raw andLightning Ridge Untouched Crystal Knobby Opal Rough 4. 75cts Lot: B4 A193Size: 13 x 13 x 6mmWeight: 4. 75 caratsOrigin: Lightning Ridge, Australia This untouched crystal knobby opal rough from Lightning Ridge features blue tones waiting to be explored, making it an exciting gamble stone for lapidaries and collectors. With its natural formation and hidden fire, this opal holds great potential for cutting and uncovering something special. Natural &