Black Onyx Bead Bracelet – 6mm Natural Banded Agate Good Luck Symbol SiO2) with a massive crystal

SiO2) with a massive crystal habit

Weight: Large ~190 g / XL ~280 g

and a natural contrast to the polished surfaces

6 oz) – each piece varies slightly

Gentle and ethereal

Black Onyx Bead Bracelet – 6mm Natural Banded Agate Good Luck Symbol SiO2) with a massive crystalGeological Overview Black Onyx is a cryptocrystalline variety of Chalcedony, a member of the Quartz family. Chemically represented as SiO2, it forms when silica rich fluids deposit in the gas cavities (vugs) of volcanic rock. While many commercial stones are dyed for uniform colour, these 6mm beads are natural Black Banded Agate, evidenced by the subtle, translucent grey bands and "eye" inclusions visible under close inspection. Its trigonal crystal