Grey base knobby opal rough 15.00cts Blue colours to chase & explore 21x12x10mm Lot B4-A343 wk_end_auction but consistency and depth still

but consistency and depth still carry moderate to high risk

80 caratsDimensions: 31 x 18 x 12 mm

This pair of rough opal formations from Lightning Ridge features some blue colors showing

This dark base seam opal from Lightning Ridge showcases stunning multicolors

Grey base knobby opal rough 15.00cts Blue colours to chase & explore 21x12x10mm Lot B4-A343 wk_end_auction but consistency and depth stillAuction Listing for Bid 4. com Lot Title: Lightning Ridge Grey Base Knobby Opal Rough 15. 00cts Blue Colours to Explore Lot Number: B4 A343 Details: Origin: Lightning Ridge, Australia Type: Grey Base Knobby Opal Rough Carat Weight: 15. 00cts Size: 21x12x10mm Features: Blue colours showing in knobby formation Great shape for chasing bars or carving A solid piece to cut or collect Description: This 15. 00ct grey base knobby opal rough from Lightning