mineral

Crazy Lace Agate

Agate (Cryptocrystalline Quartz), Silicon Dioxide (SiO2)

Hardness: 6.5-7 (Mohs scale); Color: Cream, grey, ochre, brown, and red; Luster: Waxy to vitreous; Crystal Structure: Trigonal/Microcrystalline; Cleavage: None; Specific Gravity: 2.60-2.65

Hardness: 6
Color: Cream, grey, ochre, brown, and red
Luster: Waxy to vitreous

Identified February 8, 2026More mineral →

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Physical properties

Hardness: 6.5-7 (Mohs scale); Color: Cream, grey, ochre, brown, and red; Luster: Waxy to vitreous; Crystal Structure: Trigonal/Microcrystalline; Cleavage: None; Specific Gravity: 2.60-2.65

Formation & geological history

Formed through the deposition of silica-rich groundwater within fissures and cavities of volcanic rock. This specific variety is primarily from the Cretaceous period (approx. 65-90 million years ago) and is found within limestone or volcanic host rocks.

Uses & applications

Predominantly used for lapidary work including cabochons, beads, and carvings. It is a popular ornamental stone in crystal healing circles and jewelry, and is a staple for geological collectors due to its complex patterns.

Geological facts

Known as the 'Laughter Stone' or 'Mexican Agate,' its swirling patterns are actually micro-layers of chalcedony. The complex 'lace' patterns and orbicular structures are caused by ironing and aluminum impurities during rhythmic precipitation of silica.

Field identification & locations

Identify in the field by its distinct colorful botryoidal or 'puffy' banding patterns often surrounded by a darker matrix. It is exclusively found in Chihuahua, Mexico. Collectors should look for high contrast and intact 'eyes' or circular formations.

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