Stunning Bright Blue Crystal bar on Dark base knobby opal rough 7.50cts Flat bar highly visible to cut & Polish 20x15x6mm Lot B4-A478 wk_end_auction Lightning Ridge Knobby Opal Formation

Lightning Ridge Knobby Opal Formation Rough – 17

Lot Title#Grade C–D Gamble – Knobby Seam & Fossil Rough Parcel (Lightning Ridge)

ready to set👍 Good          Nice colour

and orange

Stunning Bright Blue Crystal bar on Dark base knobby opal rough 7.50cts Flat bar highly visible to cut & Polish 20x15x6mm Lot B4-A478 wk_end_auction Lightning Ridge Knobby Opal FormationAuction Listing for Bid 4. com Lot Title: Stunning Bright Blue Crystal Bar on Dark Base Knobby Opal Rough 7. 50cts Lot Number: B4 A478 Details: Origin: Lightning Ridge, Australia Type: Dark Base Knobby Opal Rough Carat Weight: 7. 50cts Size: 20x15x6mm Features: Bright, visible blue crystal bar running through the piece, ready to cut and polish Description: This stunning piece of Lightning Ridge opal rough showcases a vivid blue crystal bar that is