Lightning Ridge Blue on Black knobby opal rough to cut 13.50cts Lovely Royal blues 21x17x5mm B4-A168 wk_auction The opal shows some bits

The opal shows some bits of fire

With its unique formation preserving ancient wood structure

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

Best suited for beginners

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

Lightning Ridge Blue on Black knobby opal rough to cut 13.50cts Lovely Royal blues 21x17x5mm B4-A168 wk_auction The opal shows some bitsLightning 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