Blue fires to exposed bar on this half a knobby opal rough 4.20cts Lightning Ridge material to gamble 19x7x6mm Lot B4-A759 Premium DescriptionHalf a knobby opal rough

DescriptionHalf a knobby opal rough from Lightning Ridge showing blue fire in an exposed bar

Lot Title: Dark Base Knobby Opal Rub/Rough – 34

A mix of knobby and fossil structure

15cts Bright Light Blue Colors

Blue fires to exposed bar on this half a knobby opal rough 4.20cts Lightning Ridge material to gamble 19x7x6mm Lot B4-A759 Premium DescriptionHalf a knobby opal roughLot Title#Grade BC Cutters Gamble Blue Fire in Half Knobby Opal Rough (Lightning Ridge) Lot NumberB4 A759 DetailsWeight: 4. 20 ctSize: 19 x 7 x 6 mmOrigin: Lightning Ridge, AustraliaType: Knobby Opal Rough (Half)Use: Cutting RoughColour: Blue fire DescriptionHalf a knobby opal rough from Lightning Ridge showing blue fire in an exposed bar. Fire is present, but the rest of the structure is untested making this a solid gamble for cutters ready to chase