Closeout Some Opalescence Australian 25mm x 18mm Oval Boulder Opal AND Scales Style Square with Bowed Edges

Style Square with Bowed Edges Number of Holes 11 Hole Size Range 4 mm – 14 mm Hole Sizes 4

Each nipple on the torch is clearly marked to identify oxygen from fuel/gas

Medium-duty torch handle suitable for casting all precious metals

Standard 17° bezel angle for accurate seating and shaping

Closeout Some Opalescence Australian 25mm x 18mm Oval Boulder Opal AND Scales Style Square with Bowed EdgesBoulder Opal forms exclusively in Queensland, Australia, where precious opal develops as veins and patches within rugged brown ironstone boulders. Over millions of years, rainwater dissolved silica from the earth's surface and deposited it into natural cavities within the ironstone host rock. The result is a gem of exceptional durability the ironstone backing provides natural reinforcement that makes Boulder Opal more resistant to cracks and fractures