Multicolour knobby opal formation rough 4.20cts Nice bar loaded with green dominant fires to cut 13x10x6mm Lot B4-A681 wk_end_auction Description:This is a stunning piece

Description:This is a stunning piece of Coober Pedy opal doublet

Lot Title: Yellow Dominant Knobby Formation Rough – 6

Lot Number: B4-A302

Type: Dark Crystal Knobby Opal Rough (Split Pair)

Multicolour knobby opal formation rough 4.20cts Nice bar loaded with green dominant fires to cut 13x10x6mm Lot B4-A681 wk_end_auction Description:This is a stunning pieceLot Title: Lightning Ridge Multicolour Knobby Opal Rough 4. 20cts Green Dominant Fires Grade A to BLot Number: B4 A681Details: 13x10x6 mm 4. 20cts Lightning Ridge Multicolour Knobby Opal Formation RoughDescription: Multicolour knobby opal formation rough from Lightning Ridge, weighing 4. 20cts. Nice bright bar loaded with green dominant fires, ready to cut and shape into something special. Grade A to B strong face, low to medium cutting risk,