Closeout Some Opalescence Australian 25mm x 18mm Oval Boulder Opal AND Scales Note that the outside diameter

Note that the outside diameter of the ring—not the ring size—is the limiting factor when selecting the appropriate hole

easy restocking

Conflict-free diamonds sourced in compliance with United Nations resolutions

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

Closeout Some Opalescence Australian 25mm x 18mm Oval Boulder Opal AND Scales Note that the outside diameterBoulder 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