Lightning Ridge Blue on Black knobby opal rough to cut 13.50cts Lovely Royal blues 21x17x5mm B4-A168 wk_auction Good dome potential with colour

Good dome potential with colour showing — just needs a skilled hand to unlock the gem

The opal shows some bits of fire

🔥 Get your bids in now for Lot B4-A324 — only at Bid-4

Best suited for beginners

25ct opalised wood fossil rough from Lightning Ridge showcases stunning vibrant blues that make it a standout specimen

Lightning Ridge Blue on Black knobby opal rough to cut 13.50cts Lovely Royal blues 21x17x5mm B4-A168 wk_auction Good dome potential with colourLightning Ridge Blue on Black Knobby Opal Rough 13. 50cts Lot: B4 A168Size: 21 x 17 x 5mmWeight: 13. 50 caratsOrigin: Lightning Ridge, Australia This blue on black knobby opal rough from Lightning Ridge features lovely royal blue fire, making it an excellent choice for cutting. With its dark base enhancing the depth of color, this opal has strong potential to reveal a striking finished gemstone. Natural & Untreated Lovely Royal Blue Fire on Black Base