mineral

Green Banded Agate

Silicon Dioxide (SiO2)

Hardness 6.5 to 7 on Mohs scale; pale green to sage green with subtle white and reddish banding; vitreous to waxy luster; microcrystalline/cryptocrystalline structure; conchoidal fracture; specific gravity 2.58 to 2.64.

Identified July 23, 2026More mineral →

Explore Green Banded Agate in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Formed through the deposition of silica from groundwater within cavities (vesicles) of volcanic and metamorphic rocks over millions of years.

Uses & applications

Used primarily as a decorative gemstone, for lapidary work, wire-wrapped jewelry, tumbled pocket stones, and reiki/crystal healing practices.

Geological facts

Banded agates get their distinct layered patterns as silica-rich water slowly precipitates successive layers of chalcedony inside rock pockets, with green coloration often caused by trace chlorite or iron inclusions.

Field identification & locations

Identified by its fine-grained microcrystalline texture, distinct banding patterns, smooth tumbled polish, and hardness capable of scratching glass. Commonly found in volcanic deposits worldwide.