Interestingly shaped lightning Ridge Knobby opal rough 7.50cts Bright Blue Center to cut 16x13x7mm Lot B4-A283 wk_end_auction Some faint fires visible

Some faint fires visible

ideal for cutting

making it an exceptional find for cutters and collectors

This knobby opal rough from Lightning Ridge showcases vibrant orange and yellow multi-fires

Lot: B4-A240Size: 28 x 23 x 10mmTotal Weight: 34

Interestingly shaped lightning Ridge Knobby opal rough 7.50cts Bright Blue Center to cut 16x13x7mm Lot B4-A283 wk_end_auction Some faint fires visibleAuction Listing for Bid 4. com Lot Title: Interestingly Shaped Lightning Ridge Knobby Opal Rough 7. 50cts Bright Blue Centre to Cut Lot Number: B4 A283 Details: Origin: Lightning Ridge, Australia Type: Knobby Opal Rough Carat Weight: 7. 50cts Size: 16x13x7mm Features: Bright Blue centre exposed with a unique knobby shape. Description: This 7. 50ct Lightning Ridge knobby opal rough has an interesting and distinct formation, with a bright Blue centre