Chalcedony 15x20-28mm Free Form Oval Beads - 15-16 Inch Peruvian Turquoise This earned it the Russian

This earned it the Russian name “orletz” or Eagle Stone

They are all varieties of the mineral corundum

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calcium carbonate and other materials

Ethiopian Opal was first discovered in Ethiopia in 1994

Chalcedony 15x20-28mm Free Form Oval Beads - 15-16 Inch Peruvian Turquoise This earned it 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.