Untouched Knobby opal rough of Lighting Ridge 10.00cts Dark base with blues showing through top skin to gamble 18x16x8mm Lot B4-A650 wk_end_auction Perfect for skilled precision cutters

Perfect for skilled precision cutters — this one demands control and care

Good mid-range cutter for jewellery or collectors after something unique

25cts Multicolour Gamble PieceLot Number: B4-A461

Type: Tumbled knobby opal rough

and full of mystery – this is a true gamble stone

Untouched Knobby opal rough of Lighting Ridge 10.00cts Dark base with blues showing through top skin to gamble 18x16x8mm Lot B4-A650 wk_end_auction Perfect for skilled precision cuttersLot Title: Lightning Ridge Knobby Opal Rough 10. 00cts Dark Base with Blue Fires Showing Grade C GambleLot Number: B4 A650Details: 18x16x8 mm 10. 00cts Lightning Ridge Knobby Opal RoughDescription: Untouched dark base knobby opal rough from Lightning Ridge, weighing 10. 00cts. Blue fires showing through the top skin, teasing some potential below, but untested inside. Classic Grade C gamble a perfect piece for those ready to chase whats hidden under