dark base Crystal Seam opal rough 11.50cts Coober Pedy with Flashes of blues & greens 22x10x9mm Lot B4-A367 Premium flat blue bar visible from

flat blue bar visible from two sides and through the top skin

The opals are embedded in red host rock and show some very faint colour

With its natural structure and vibrant play-of-color

00ct piece of Coober Pedy seam opal with a rich dark base tone

dark base Crystal Seam opal rough 11.50cts Coober Pedy with Flashes of blues & greens 22x10x9mm Lot B4-A367 Premium flat blue bar visible fromLot Title: Dark Base Crystal Seam Opal Rough Flashes of Blues & GreensLot Number: B4 A367Weight: 11. 50 caratsDimensions: 22 x 10 x 9 mm Details: Origin: Coober Pedy, South Australia Type: Crystal Seam Opal (Rough) Body Tone: Dark base crystal Play of Colour: Flashing blues and greens Transparency: Semi translucent to translucent Cutting Potential: Moderate visible colour with more to chase Description: This 11. 50ct dark base crystal seam opal from