Dark Base Knobby opal rough sat on Host Rock 30.00cts Lightning Ridge Bright Blues 28x18x14mm Lot B4-A033 wk_end_auction This knobby opal formation rough

This knobby opal formation rough from Lightning Ridge is a true gamble stone

Coober Pedy Crystal Seam Opal Rub Rough – 9

This crystal seam opal rough from Coober Pedy is loaded with stunning multi-fire

Excellent size for cutting and shaping

Dark Base Knobby opal rough sat on Host Rock 30.00cts Lightning Ridge Bright Blues 28x18x14mm Lot B4-A033 wk_end_auction This knobby opal formation roughAuction Listing for Bid 4. com Lot Title: Dark Base Knobby Opal Rough on Host Rock 30. 00cts Bright Blues Lot Number: B4 A033 Details: Origin: Lightning Ridge, Australia Type: Dark Base Knobby Opal Rough on Host Rock Carat Weight: 30. 00cts Dimensions: 28x18x14mm Features: Dark base knobby opal naturally set on host rock Bright blue flashes throughout the piece Ideal for lapidary projects or as a collectors item Description: This substantial 30. 00ct