Lightning Ridge Untouched Knobby rough opal 15.00cts Some colour to chase 16x15x15mm Lot B4-A216 wk_end_auction AustraliaType: Black Base Opal RubUse:

AustraliaType: Black Base Opal RubUse: Cutting / FinishingColour: Bright blue fire

With greens and blues already showing

the bars are thin and irregular

Lot NumberB4-A743

Lightning Ridge Untouched Knobby rough opal 15.00cts Some colour to chase 16x15x15mm Lot B4-A216 wk_end_auction AustraliaType: Black Base Opal RubUse:Lightning Ridge Untouched Knobby Opal Rough 15. 00cts Lot: B4 A216Size: 16 x 15 x 15mmTotal Weight: 15. 00 caratsOrigin: Lightning Ridge, Australia This untouched knobby opal rough from Lightning Ridge holds some color waiting to be chased, making it an exciting gamble for lapidaries. With its natural formation and potential for hidden fire, this opal presents an excellent cutting opportunity. Natural & Untouched Some Color to Chase & Explore Knobby