mineral

Blue Lace Agate

Silicon Dioxide (SiO2)

Hardness: 6.5–7 (Mohs scale); Color: Pale blue with white or darker blue banding; Luster: Vitreous to waxy; Crystal structure: Trigonal (microcrystalline); Cleavage: None; Specific Gravity: 2.60–2.65.

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

Identified July 4, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the deposition of silica from groundwater in the cavities of igneous rocks (primarily volcanic lava). This specific variety is formed under low-temperature hydrothermal conditions over millions of years.

Uses & applications

Predominantly used as a gemstone in jewelry (cabochons, beads), for carvings, and as a popular collector's item in metaphysical circles.

Geological facts

Blue lace agate is a specific variety of chalcedony. The best-known deposits were originally discovered in Namibia, which remains the primary source for the high-quality, distinctively banded material.

Field identification & locations

Identify by its characteristic 'lace-like' bands of white and blue. In the field, look for nodules with waxy luster and conchoidal fracture. Found primarily in Namibia, but related chalcedonies occur in Brazil and the USA.