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 Description: A trio of knobby

Description: A trio of knobby opal rough from Lightning Ridge

This dark base knobby opal split from Lightning Ridge showcases blue colors already showing

making it a smart pick for custom cuts or setting into a slim design

Lot: B4-A256Size Range: 15 x 11 x 10mm & 11 x 10 x 7mmTotal Weight: 14

Lightning Ridge Knobby Opal Formation Rough – 17

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 Description: A trio of knobbyAuction 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