Mineral

Crazy Lace Agate

Agate (Chalcedony), SiO2

Hardness: 6.5 - 7 on Mohs scale. Color: predominantly white, cream, brown, and gray with intricate banding and lace-like patterns; sometimes features reddish or orangey inclusions from iron oxide. Luster: vitreous or waxy. Crystal structure: microcrystalline quartz (trigonal). Cleavage: none. Specific gravity: ~2.6.

Hardness: 6
Luster: vitreous or waxy

Identified June 19, 2026More mineral →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Formed as a chemical precipitate from silica-rich groundwater filling cavities in volcanic rocks (often forming nodules or geodes) or other host rocks. The bands form over time as the composition of the circulating fluids changes. Most notably found in Chihuahua, Mexico, formed during the Cretaceous period (65-90 million years ago).

Uses & applications

Predominantly used in lapidary arts for making cabochons, beads, pendants, and ornamental carvings. Also popular among mineral collectors. Not typically used in industrial applications due to its purely decorative value.

Geological facts

Known as 'the laughter stone' or 'happy lace' in metaphysical communities due to its vibrant, swirling patterns. The intricate banding is caused by varying concentrations of impurities, usually iron or manganese oxides, changing over geological time.

Field identification & locations

Identifiable by its distinct, chaotic, swirling, lace-like patterns and bands of mostly earthy colors. Found primarily in Chihuahua, Mexico. For collectors, striking contrast and complete, intricate 'lace' patterns increase desirability.