Green Chalcedony 10mm Round - 15-16 Inch Dendritic Black Opal blue-greens and greens swirled with

blue-greens and greens swirled with yellow-green

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

in Karelia

but the difference in the pattern really stands out and shows it's individual beauty

check out The Identification of Zachery Treated Turquoise

Green Chalcedony 10mm Round - 15-16 Inch Dendritic Black Opal blue-greens and greens swirled withBlue 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.