Lightning Ridge Half a knobby opal rough 15.50cts Blue colours to chase 22x15x10mm Lot B4-A299 ToClear

Lightning Ridge Half a knobby opal rough 15.50cts Blue colours to chase 22x15x10mm Lot B4-A299 ToClearAuction Listing for Bid 4. com Lot Title: Lightning Ridge Half Knobby Opal Rough 15. 50cts Blue Colours to Chase Lot Number: B4 A299 Details: Origin: Lightning Ridge, Australia Type: Half Knobby Opal Rough Carat Weight: 15. 50cts Size: 22x15x10mm Features: Blue colours exposed with more to chase. Description: This 15. 50ct half knobby opal rough from Lightning Ridge features exposed Blue colour zones ready to be worked. A substantial piece offering

Grade Key: 🔥 Grade A - High-quality opal with low risk

00ct split pair of knobby rough from Lightning Ridge with bright blue bars showing on a dark base

⚠️ Cutters/Gamble Grade B – Strong fire is present

clean zone of royal blue fire on a dark base

Lot Title: Coober Pedy Seam Opal Rough Split – 37

75cts Lightning Multi-Colours

💚💛💙 Green

low to medium risk for skilled cutters or carvers

Lot: B4-A259Size: 16x11x6mm & 16x10x6mmWeight: 11

00ctsLot Number: B4-A591Details: 15x9x3 mm – Lightning Ridge – Fossil Opal – Thin FormatDescription:Stunning opalised wood fossil from Lightning Ridge showing bright blue and green hues across the surface

00ctsLot Number: B4-A583Details: 28x25x10 mm – Lightning Ridge – Dark Base CrystalDescription:Big Lightning Ridge dark base crystal knobby opal rough with blue fire visible 360° around the stone

or Gamble – Grade A to BLot Number: B4-A667Details: 9x9x6 mm – 2