Stunning Crystal Knobby opal rough formation 6.25cts Bright Greens/blues to gamble 16x13x7mm Lot B4-A673 Premium it presents both a challenge

it presents both a challenge and an opportunity for the adventurous cutter

With its thick structure and great dimensions

With its natural structure and potential hidden fire

Reds & Gorgeous Multicolour Flat Bar – Lightning Ridge Knobby Opal Rough – 1

Stunning Crystal Knobby opal rough formation 6.25cts Bright Greens/blues to gamble 16x13x7mm Lot B4-A673 Premium it presents both a challengeLot Title: Lightning Ridge Crystal Knobby Opal Rough 6. 25cts Bright Greens Blues Grade BLot Number: B4 A673Details: 16x13x7 mm 6. 25cts Lightning Ridge Crystal Knobby Opal RoughDescription: Stunning crystal knobby opal rough formation from Lightning Ridge, weighing 6. 25cts. Bright greens and blues visible in the bar a very promising piece to chase and cut. Grade B strong visible colour, moderate risk with high upside for a skilled cutter. Grade B