Mineral

Crazy Lace Agate

Chalcedony (SiO2)

Hardness: 6.5-7 on the Mohs scale. Color: Predominantly white with intricate, swirling patterns of red, brown, and sometimes yellow or gray. Luster: Vitreous to waxy. Crystal structure: Cryptocrystalline (microcrystalline quartz). Cleavage: None. Specific gravity: 2.58-2.64.

Hardness: 6
Luster: Vitreous to waxy

Identified June 17, 2026More mineral →

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Physical properties

Formation & geological history

Formed in cavities of volcanic rocks through the deposition of silica-rich fluids. The intricate patterns are created by trace minerals like iron and aluminum during its formation. Typically associated with the Cretaceous period. Sourced primarily from Northern Mexico (Chihuahua).

Uses & applications

Popular in lapidary arts, jewelry making, and as a collector's stone due to its striking patterns. Often cut into cabochons, polished into tumbled stones, or carved.

Geological facts

Often referred to as the 'Laughter Stone' or 'Happy Lace' in metaphysical circles. Its complex banding and patterns make every piece unique.

Field identification & locations

Identify by its characteristic looping, swirling, and erratic banding patterns with predominantly white, red, and brown colors. Commonly found in Chihuahua, Mexico. Collectors should look for distinct, complex patterns and good polish.