Blue Chalcedony (Marbled) 10mm Round 15-16 Inch Stone Type_Blue Porcelain Agate These mines are also famous

These mines are also famous for sourcing North-American Jasper

A cryptocrystalline Chalcedony

including lazurite

Crazy Lace Agate is a banded Chalcedony that naturally occurs as golden brown with layers of pink

The fibrous asbestos inclusions in the stone give it the flash that inspired its name

Blue Chalcedony (Marbled) 10mm Round 15-16 Inch Stone Type_Blue Porcelain Agate These mines are also famousBlue Chalcedony is a naturally occurring soft blue translucent stone. It is a member of the Quartz family, a form of silica with a cryptocrystalline structure that incorporates Moganite along with the Quartz. Known in antiquity as the Speakers Stone, it is believed to have been worn Cicero, the great Roman orator. These strands were cut into beads with some of the material the Chalcedony was mined out of remaining, creating a unique "marbled" look.