mineral

Banded Agate

Cryptocrystalline Silica (SiO2)

Hardness: 6.5-7 (Mohs scale), Color: Multi-colored bands (white, brown, translucent), Luster: Vitreous to waxy, Crystal structure: Trigonal/Microcrystalline, Cleavage: None, Fracture: Conchoidal

Hardness: 6

Identified June 29, 2026More mineral →

Explore 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

Hardness: 6.5-7 (Mohs scale), Color: Multi-colored bands (white, brown, translucent), Luster: Vitreous to waxy, Crystal structure: Trigonal/Microcrystalline, Cleavage: None, Fracture: Conchoidal

Formation & geological history

Formed in cavities (vesicles) of volcanic rocks or ancient lava flows as silica-rich groundwater precipitates over time, creating layers. Age can vary from Cenozoic to Precambrian depending on the host rock.

Uses & applications

Commonly used in jewelry (cabochons), precision weighing balances, mortar and pestles, decorative ornaments, and as pocket stones for collectors.

Geological facts

Agates are often named after their unique patterns or locations, such as Lace Agate or Brazilian Agate. They have been used as amulets and ornaments since ancient Greek times.

Field identification & locations

Identify by looking for concentric color banding and a characteristic waxy appearance when broken. Often found in riverbeds or areas with weathered volcanic rock.