Chalcedony 15x20-28mm Free Form Oval Beads - 15-16 Inch featured_06042026 the mineral was named for

the mineral was named for French paleontologist Eugene Durmortier (1803 to 1873)

often found in collections

clear quartz

It is found around the world in many unusual natural formations including globes

A cryptocrystalline Chalcedony

Chalcedony 15x20-28mm Free Form Oval Beads - 15-16 Inch featured_06042026 the mineral was named forBlue 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.