Closeout Higher Opalescence Australian 30mm x 20mm Oval Boulder Opal Craytex Tourmaline is highly versatile

Tourmaline is highly versatile

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

Genuine Badeco replacement plunger assembly

Hundreds of photographs

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

Closeout Higher Opalescence Australian 30mm x 20mm Oval Boulder Opal Craytex Tourmaline is highly versatileBoulder 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.