mineral

Blue Lace Agate

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 6.5-7.0 (Mohs scale), Color: Pale blue with white or darker blue banding, Luster: Vitreous to waxy, Crystal structure: Trigonal (cryptocrystalline), Cleavage: None, Specific gravity: 2.58-2.64

Hardness: 6

Identified July 13, 2026More mineral →

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Physical properties

Formation & geological history

Formed in volcanic rock cavities through the deposition of silica from groundwater. The blue color is due to the scattering of light by minute inclusions, a phenomenon known as the Tyndall effect.

Uses & applications

Primarily used in jewelry making, lapidary arts, and as a decorative collector's stone. It is often carved into cabochons, beads, or decorative figurines.

Geological facts

Blue Lace Agate was first discovered in Namibia in the 1960s. It is technically a variety of chalcedony. Unlike many agates which are dyed, most blue lace agate displays its delicate blue color naturally.

Field identification & locations

Identify by its distinct light blue hue and fine, wavy white banding. It is most famously found in Namibia, but deposits also exist in South Africa, Brazil, and parts of the United States.