Lightning Ridge Black Seam opal rough 3.75cts Greens/blues to expose & polish 12x9x5mm Lot B4-A757 ToClear unknown depth/consistency – fun gamble

unknown depth/consistency – fun gamble with blue bar potential

This thick seam opal rough from Coober Pedy is loaded with blue fire

Piece 2: 16 x 9 x 6 mm

this opal is ready for the next stage in the hands of a skilled lapidary

This 35ct mixed lot includes knobby chips

Lightning Ridge Black Seam opal rough 3.75cts Greens/blues to expose & polish 12x9x5mm Lot B4-A757 ToClear unknown depth/consistency – fun gambleLot Title#Grade B Cutters Gamble Green Blue Fire Black Seam Opal Rough (Lightning Ridge) Lot NumberB4 A757 DetailsWeight: 3. 75 ctSize: 12 x 9 x 5 mmOrigin: Lightning Ridge, AustraliaType: Black Seam Opal RoughUse: Cutting RoughColour: Green & blue DescriptionLightning Ridge black seam opal rough showing green and blue fire with potential to expose a cuttable face. The bar is promising but not fully revealed, offering a moderate risk gamble with