mineral

Blue Lace Agate (Tumbled)

Silicon Dioxide (SiO2) with trace minerals

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs scale); Color: Pale blue with white or darker blue banding; Luster: Vitreous to waxy; Structure: Hexagonal (Cryptocrystalline); Cleavage: None; SG: 2.60-2.65

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

Identified July 18, 2026More mineral →

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Physical properties

Hardness: 6.5-7 (Mohs scale); Color: Pale blue with white or darker blue banding; Luster: Vitreous to waxy; Structure: Hexagonal (Cryptocrystalline); Cleavage: None; SG: 2.60-2.65

Formation & geological history

Formed in volcanic rock cavities (vugs) through the deposition of silica from groundwater. The blue color is often attributed to the scattering of light by microscopic inclusions or 'Tyndall scattering'.

Uses & applications

Used primarily in jewelry (cabochons, beads), decorative carvings, and as a popular gemstone for collectors and metaphysical practices.

Geological facts

Most high-quality Blue Lace Agate was originally sourced from the farm Ysterputs in Namibia. It belongs to the chalcedony family, specifically the banded variety known as agate.

Field identification & locations

Identify by its distinctive delicate blue and white bands. In the field, look for nodules in basalt or rhyolite. For collectors, clarity and distinctness of the lace pattern drive value.