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Ethiopian Opal typically occurs in brown
commonly with inclusions of copper in speckled patterns throughout the stone
Amazonite is named for the Amazon River in Brazil
Labradorite is usually gray-green
Chalcedony (Marbled) 16mm Puff Coin - 15-16 Inch R1669 Ethiopian Opal typically occurs inBlue 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.