Kona Dolomite comes from copper and dolomite quarries in Michigan. The material dates between 2.1 and 2.2 billion years old. The deposit is also host to fossil stromatolite, a primitive blue green algae that claims the title of first cellular life on Earth. If you're looking for an old rock - this is the stuff you want!
The stones are 26mm wide and hang 38mm on hammered 14k gold wire.
All items are shipped USPS Priority mail with tracking and insurance.