Blue Chalcedony (Marbled) 10mm Round 15-16 Inch Slab This item is treated and

This item is treated and dyed agate

Quartz has been highly valued by virtually every civilization throughout history

” and thought to be the luckiest of all crystals

Yellow Opal does not display the changeable flash of internal luster that other opals are known for

Blue Chalcedony (Marbled) 10mm Round 15-16 Inch Slab This item is treated andBlue 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.