sedimentary

Lace Agate

Silicon Dioxide (SiO2) - Microcrystalline Quartz

AI-generated identification · may be incorrect

Hardness: 6.5-7 on Mohs scale. Color: White, cream, tan with swirling patterns. Luster: Waxy to vitreous. Crystal Structure: Trigonal (microcrystalline). Cleavage: None. Specific Gravity: 2.58-2.64.

Hardness: 6
Color: White, cream, tan with swirling patterns
Luster: Waxy to vitreous

Identified June 20, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 on Mohs scale. Color: White, cream, tan with swirling patterns. Luster: Waxy to vitreous. Crystal Structure: Trigonal (microcrystalline). Cleavage: None. Specific Gravity: 2.58-2.64.

Formation & geological history

Formed through the deposition of silica from groundwater in cavities within volcanic or sedimentary rocks. The distinctive lace-like patterns are created by rhythmic precipitation of different mineral layers over thousands of years.

Uses & applications

Primarily used for lapidary work, jewelry making (cabochons), interior decoration, and as a popular focus for metaphysical crystal collectors.

Geological facts

The intricate, swirling patterns are often referred to as 'parrallax' effects in high-quality specimens. While Mexican Crazy Lace is the most famous variety, white lace agates are found globally.

Field identification & locations

Identify in the field by its characteristic concentric or 'lacey' banding and waxy texture when broken. It will scratch glass but cannot be scratched by a steel knife. Common in Brazil, Mexico, and the Lake Superior region.