mineral

Blue Lace Agate (Tumbled)

Silicon Dioxide (SiO2)

Hardness: 6.5–7 on Mohs scale; Color: Pale blue with white or darker blue bands; Luster: Vitreous to waxy; Crystal Structure: Trigonal (Microcrystalline/Cryptocrystalline); Cleavage: None; Specific Gravity: 2.60–2.65

Hardness: 6
Color: Pale blue with white or darker blue bands
Luster: Vitreous to waxy

Identified April 3, 2026More mineral →

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Physical properties

Formation & geological history

Formed in volcanic rock cavities (vugs) as silica-rich groundwater deposited layers over thousands of years. The blue color often comes from trace amounts of copper or the Tyndall scattering of light through micro-structures.

Uses & applications

Predominantly used for jewelry, lapidary arts, and as a decorative or 'metaphysical' healing stone. Highly valued in the gemstone market for its calming appearance.

Geological facts

Commonly sourced from Namibia, it is famous for its intricate, lace-like banding patterns. Unlike solid blue chalcedony, 'Lace Agate' must exhibit these distinct white wavy lines.

Field identification & locations

Identify by its characteristic thin blue and white bands and its translucent to opaque nature. It won't scratch with a steel knife but can be scratched by quartz.