Chalcedony 6mm Purple Round Bead - 15-16 Inch 2025-top-20-tqs where copper contributes to blue

where copper contributes to blue tones and iron introduces green variations

” Tourmaline is unusual in that it is both pyroelectric and piezoelectric

and sometimes polished

Black Eye Agate is a variety of Sardonyx which has a Sard base

Black Oxide

Chalcedony 6mm Purple Round Bead - 15-16 Inch 2025-top-20-tqs where copper contributes to blueBlue 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.