Blue Chalcedony (Marbled) 8mm Round 15-16 Inch Grade A orange and rust are due

orange and rust are due to traces of hematite within the stone

Its inclusions of red

while maintaining the wood's original structure

It is a variety of banded Chalcedony with layers that may contain scarlet

Known in antiquity as the Speaker’s Stone

Blue Chalcedony (Marbled) 8mm Round 15-16 Inch Grade A orange and rust are dueBlue 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.