Grey base Seam opal rough 3.75ctys Vertical type colour bar Green & Blues to cut 15x14x3mm Lot B4-A800 Premium 50ct knobby opal formation rough

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

Its clarity and brightness make it an ideal piece for cutting

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

or those who enjoy the process of colour chasing through varied material

Lot NumberB4-A808

Grey base Seam opal rough 3.75ctys Vertical type colour bar Green & Blues to cut 15x14x3mm Lot B4-A800 Premium 50ct knobby opal formation roughLot 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