Origin: Michigan, USA
Description: Two million year old glaciers ripped through the Petoskey stone deposits and spread them throughout Michigan. They can be found in gravel pits and along beaches there if you're lucky. Petoskey stone deposits are fossilized Rugose Coral.
Chemical Composition: Si02
Grade: Lapidary Grade
Inclusions: The surface will often have some waste due to pitting. Some areas have great patterns, others do not. Usually 80% is aesthetic pattern.
Cost per Gram: $0.10
Size approximately 1 pc: 8cm x 6.5cm x 3.5cm
Weight approximately 1 pc: 195g
Rough is rough. We do our best to grade and describe pieces in the lot, but ultimately, they all differ.