Lightning Ridge Black/Dark Seam opal rough 7.20cts Bright Vibrant Blues to face up & polish 16x12x7mm Lot B4-A692 wk_auction While not guaranteed

While not guaranteed

Features: Blue dominant fires complemented by green flashes

Ideal for skilled cutters who enjoy the challenge of unlocking hidden fire or collectors looking for sizeable Coober Pedy rough with colour promise

Grade A to B — strong face

25cts – Bright Green/Blue/Yellow Hues

Lightning Ridge Black/Dark Seam opal rough 7.20cts Bright Vibrant Blues to face up & polish 16x12x7mm Lot B4-A692 wk_auction While not guaranteedLot Title: Lightning Ridge Black Dark Seam Opal Rough 7. 20cts Bright Vibrant Blues Grade A to BLot Number: B4 A692Details: 16x12x7 mm 7. 20cts Lightning Ridge Black Dark Seam Opal RoughDescription: Lightning Ridge black dark base seam opal rough, weighing 7. 20cts. Bright, vibrant blues showing material to face up and polish into a quality gemstone. Grade A to B strong visible colour, low to medium risk, a cutters gamble for skilled hands. Grade A to