Description: This stone is a bugger to grind and polish. It's so hard, and takes a long time to shape. But!.. the payoff is spectacular. It yields a durable, very lustrous polish. The material has little to no waste, as there isn't any ring or soft areas.
Chemical Composition: SiO2
Grade: Lapidary Grade
Cost per Gram: $0.11
Size approximately 1 pc: 10cm x 6cm x 7.5cm
Weight approximately 1 pc: 245g
Rough is rough. We do our best to grade and describe pieces in the lot, but ultimately, they all differ.