Mineral

Crazy Lace Agate

Agate (Cryptocrystalline Quartz), SiO2

Hardness: 6.5-7 on Mohs scale. Color: predominantly white, grey, with varied bands of yellow, orange, and red. Luster: Vitreous to waxy. Crystal structure: Cryptocrystalline. Cleavage: None. Specific gravity: 2.58-2.64.

Hardness: 6
Luster: Vitreous to waxy

Identified June 19, 2026More mineral →

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Physical properties

Formation & geological history

Formed from silica-rich groundwater filling cavities in volcanic rock or limestone. The intricate banding is caused by variations in trace elements during formation. Often associated with the Cretaceous period.

Uses & applications

Commonly used in lapidary, jewelry making, ornamental carvings, and sold as tumbled stones for collectors.

Geological facts

Known as the 'Laughter Stone' or 'Happy Lace.' It is almost exclusively found in Chihuahua, Mexico.

Field identification & locations

Identifiable by its chaotic, twisting, lace-like banding and varied colors, often with drusy quartz-filled vugs. Found primarily in Northern Mexico. Collectors value distinct, contrasting patterns.

Other mineral specimens

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Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Schist

Metamorphic

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

metamorphic

Nephrite Jade

Nephrite

Mineral/Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

mineral