Grey base Seam opal rough 3.75ctys Vertical type colour bar Green & Blues to cut 15x14x3mm Lot B4-A800 Premium ⚠️ Gamble Grade B–C (Gamble)Colour

⚠️ Gamble Grade B–C (Gamble)Colour visible through the skin

Great for collectors or cutters willing to explore and gamble

50ct knobby opal formation rough from Lightning Ridge displays striking bright blue colours

Lot Title: Coober Pedy Crystal Seam Opal Rough – 6

Grey base Seam opal rough 3.75ctys Vertical type colour bar Green & Blues to cut 15x14x3mm Lot B4-A800 Premium ⚠️ Gamble Grade B–C (Gamble)ColourLot Title#Grade BC Gamble Vertical Green Blue Bar Seam Opal Rough (Grey Base Lightning Ridge) Lot NumberB4 A800 DetailsWeight: 3. 75 ctSize: 15 x 14 x 3 mmOrigin: Lightning Ridge, AustraliaType: Grey Base Seam Opal RoughUse: Cutting RoughColour: Green & blue (vertical bar) DescriptionLightning Ridge seam opal rough on a grey base with a vertical style green and blue colour bar. The piece is compact and slim, offering a moderate gamble with potential