Blue Chalcedony (Marbled) 6mm Round 15-16 Inch White Buffalo Many stones in the Russian

Many stones in the Russian crown jewels from the 17th century which were thought to be rubies are actually red Tourmaline

but occasionally gabbro comes in oranges and greens

while maintaining the wood's original structure

River Stone is a form of limestone composed of quartz

Blue Chalcedony (Marbled) 6mm Round 15-16 Inch White Buffalo Many stones in the RussianBlue 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.