Lightning Ridge Black Centered Knobby opal rough 28.00ctsSome Bright Blues to Gamble 28x20x9mm Lot B4-A124 wk_end_auction Size Range: 16mm to chip

Size Range: 16mm to chip size

but not all pieces are cutters

Lot Number: B4-A337

Measuring 13x11x5mm

Orange/Yellow Multi-Fires on Lightning Ridge Knobby Opal Rough – 23

Lightning Ridge Black Centered Knobby opal rough 28.00ctsSome Bright Blues to Gamble 28x20x9mm Lot B4-A124 wk_end_auction Size Range: 16mm to chipLightning Ridge Black Centered Knobby Opal Rough 28. 00cts Lot: B4 A124Size: 28 x 20 x 9mmWeight: 28. 00 caratsOrigin: Lightning Ridge, Australia This black centered knobby opal rough from Lightning Ridge features some bright blue fire, making it an exciting gamble stone for lapidaries and collectors. With its deep color potential and natural formation, this opal offers a thrilling opportunity to uncover hidden brilliance through cutting and