Lightning Ridge Black Seam opal rough 3.75cts Greens/blues to expose & polish 12x9x5mm Lot B4-A757 ToClear high risk❓ D (Blind Gamble)

high risk❓ D (Blind Gamble) – No visible colour

unknown depth/consistency – fun gamble with blue bar potential

com and bring these opals to life

Type: Tumbled knobby opal rough

Big Thick White Milky Seam Opal Rough – 78

Lightning Ridge Black Seam opal rough 3.75cts Greens/blues to expose & polish 12x9x5mm Lot B4-A757 ToClear high risk❓ D (Blind Gamble)Lot 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