Grey Base Seam opal rough 5.50cts Crystal bar carrying some blues 19x12x5mm Lot B4-A213 wk_auction Features: Dual green and blue

Features: Dual green and blue bars visible on a dark base

Grade D — sold as potch only

teasing the full gem bar beneath

A blue bar is visible from side to side and across the top

Grey Base Seam opal rough 5.50cts Crystal bar carrying some blues 19x12x5mm Lot B4-A213 wk_auction Features: Dual green and blueGrey Base Seam Opal Rough 5. 50cts Lightning Ridge Lot: B4 A213Size: 19 x 12 x 5mmTotal Weight: 5. 50 caratsOrigin: Lightning Ridge, Australia This grey base seam opal rough from Lightning Ridge features a crystal bar carrying some blue fire, making it an interesting piece for cutting or collecting. With its transparent crystal layer and subtle blue play of color, this opal offers potential for lapidaries looking to explore its fire. Natural &