Closeout Higher Opalescence Australian 30mm x 20mm Oval Boulder Opal Craytex Secure the workpiece and keep

Secure the workpiece and keep the bur square to avoid tapered or oval seats

Tourmaline is highly versatile

This product contains nickel and is subject to California Proposition 65 requirements

The raising technique described by Bill Fretz involves angling metal off the stake to create an air gap

A refined and elegant way to add a personal touch to any fine jewelry collection

Closeout Higher Opalescence Australian 30mm x 20mm Oval Boulder Opal Craytex Secure the workpiece and keepBoulder Opal is found exclusively in Queensland, Australia, where veins and patches of precious opal form within rugged brown ironstone boulders. These gems developed over millions of years as rainwater dissolved silica from the earth's surface and deposited it into natural cavities within the ironstone. The ironstone backing provides natural reinforcement, making Boulder Opal more resistant to cracks and fractures compared to other opal varieties.