Origin: Cobalt, Ontario, Canada
Description: This stone is rare to find ever since the silver mines closed. It is estimated that some pieces can have up to 70% silver content. As for working the stone, it will become very chromatic once polished. The stone is softer, in the calcite range and polishes fast.
WARNING: This stone contains arsenic. please wear gloves, and a face covering when grinding and sanding.
Chemical Composition: CaCo3AgAs
Grade: Semi Precious
Inclusions: Very few cracks
Cost per Gram: $1.30
Size approximately 1 pc: 9cm x 4cm x 3cm
Weight approximately 1 pc: 160g
Rough is rough. We do our best to grade and describe pieces in the lot, but ultimately, they all differ.