Lightning Ridge Rub rough knobby opal formation 4.00cts Blues to exposed face 14x13x5mm B4-A161 wk_end_auction Known for producing some of

Known for producing some of the world's finest opals

🔥 Natural & Untreated🔥 Red & Orange Fire in a Bar🔥 Authentic Australian Opal – Safe in Water

🎲 Gamble Grade C (Gamble) – Bright colour visible in a small zone

good cutting yield⚠️ B Colour visible

Measuring 19x11x5mm

Lightning Ridge Rub rough knobby opal formation 4.00cts Blues to exposed face 14x13x5mm B4-A161 wk_end_auction Known for producing some ofLightning Ridge Rub Rough Knobby Opal Formation 4. 00cts Lot: B4 A161Size: 14 x 13 x 5mmWeight: 4. 00 caratsOrigin: Lightning Ridge, Australia This rub rough knobby opal formation from Lightning Ridge features blue colors already exposed on the face, making it a promising piece for lapidaries and collectors. With its natural formation and visible fire, this opal holds potential for cutting and polishing into a stunning gemstone. Natural & Untreated