mineral

Crazy Lace Agate

Silicon Dioxide (SiO2) with impurities

Hardness: 6.5–7 (Mohs); Color: White, cream, brown, gold, and grey; Luster: Waxy to vitreous; Crystal Structure: Trigonal (cryptocrystalline); Cleavage: None (conchoidal fracture); Specific Gravity: 2.58–2.64.

Hardness: 6
Color: White, cream, brown, gold, and grey
Luster: Waxy to vitreous

Identified April 4, 2026More mineral →

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Physical properties

Formation & geological history

Formed in the Cretaceous period (approx. 65-90 million years ago) within crevices of volcanic rock. It is created through the rhythmic deposition of silica-rich groundwater within volcanic cavities, often incorporating iron and aluminum oxides to create the lace-like patterns.

Uses & applications

Primarily used for ornamental jewelry (cabochons, beads), decorative carvings, and as a popular specimen for collectors and metaphysical practitioners.

Geological facts

Also known as 'Mexican Agate' or 'The Laughter Stone,' it is famous for its intricate, swirling patterns that resemble bubbles or tangled lace. It is uniquely tied to the Chihuahua region of Mexico.

Field identification & locations

Identify in the field by its distinct 'lace' or 'fortification' banding patterns and waxy appearance. It is exclusively found in the state of Chihuahua, Mexico. Collectors should look for high contrast and complex patterns.

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