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Installation should be performed by a qualified technician to ensure safety and calibration accuracy
Broad filing face provides stability while still reaching confined areas
The contents are curated to match GIA's curriculum requirements
This complete kit includes 7 interchangeable inserts
Watches: Do not submerge watches
Closeout No Opalescence Australian 25mm x 18mm Oval Boulder Opal GreenLion Installation should be performed byBoulder Opal is found exclusively in Queensland, Australia, where veins and patches of precious opal form within rugged brown ironstone boulders. This gem developed over millions of years as rainwater dissolved silica from the earth's surface and deposited it into natural cavities within the ironstone. The result is a stone of exceptional durability the ironstone backing provides natural reinforcement that makes Boulder Opal more resistant to cracks
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