Lightning Ridge Knobby opal rough 8.90cts Band of Blue fires to chase & explore 18x13x9mm Lot B4-A592 wk_auction and this piece is a

and this piece is a prime example of its brilliance

but the internal structure is unknown

Lightning Ridge Dark Base Knobby Opal Rough Split – 18

great potential for cutters confident with form and face shaping

Lot NumberB4-A739

Lightning Ridge Knobby opal rough 8.90cts Band of Blue fires to chase & explore 18x13x9mm Lot B4-A592 wk_auction and this piece is aLot Title: Blue Fire Band Lightning Ridge Knobby Opal Rough 8. 90ctsLot Number: B4 A592Details: 18x13x9 mm Lightning Ridge Knobby FormationDescription: Lightning Ridge knobby opal rough with a distinct band of blue fire running through the body. The bar is there to chase, but how far does it go? Good size and solid build make this a worthy exploration piece for those who like a bit of mystery. A classic blue gamble waiting for the right cut. Gamble