Banded Agate (Crazy Lace/Mexican Agate Variety)

Physical Properties

Hardness: 6.5-7.0 (Mohs); Color: Multi-colored earthy tones including tan, orange, and red; Luster: Waxy to vitreous; Crystal structure: Trigonal (microcrystalline); Cleavage: None; Specific Gravity: 2.58-2.64

Formation & Geological History

Formed in volcanic host rocks through the deposition of silica from groundwater into cavities. Most notable varieties are from the Cretaceous period (approx. 65-90 million years old).

Uses & Applications

Primarily used for lapidary arts, jewelry, carvings, and as decorative collector specimens due to its intricate patterns.

Geological Facts

The detailed patterns in crazy lace agate are caused by iron and aluminum inclusions. It is often called the 'Laughter Stone' or 'Happy Lace' in metaphysical circles.

Field Identification & Locations

Look for microcrystalline quartz with concentric, wavy banding or 'eyes.' Commonly found in Chihuahua, Mexico. Can be identified by its hardness (it will scratch glass) and lack of cleavage.

Identified on: 4/29/2026

Mode: Standard