sedimentary

Banded Agate (specifically Crazy Lace Agate style)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

AI-generated identification · may be incorrect

Hardness: 6.5-7 on Mohs scale; Color: Multi-colored bands of white, brown, grey, and black; Luster: Waxy to vitreous; Crystal Structure: Trigonal (microcrystalline); Cleavage: None; Fracture: Conchoidal.

Hardness: 6
Color: Multi-colored bands of white, brown, grey, and black
Luster: Waxy to vitreous

Identified July 18, 2026More sedimentary →

Explore Banded Agate (specifically Crazy Lace Agate style) 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 into cavities (vugs) within volcanic or sedimentary rocks over thousands of years. The distinctive rhythmic banding occurs due to changes in impurities and silica concentration during the layering process.

Uses & applications

Widely used for lapidary work, jewelry making (cabochons), collection specimens, and believed by some to have metaphysical healing properties.

Geological facts

Agate banding is so fine that it can sometimes contain thousands of layers in a single inch. This specific specimen displays a 'lacey' pattern typical of agates found in Northern Mexico.

Field identification & locations

Identify by its waxy texture, translucency when held to light, and characteristic concentric or wavy color bands. Common in gravel beds, dry river washes, and areas with historic volcanic activity.