mineral

Blue Lace Agate

Silicon Dioxide (SiO2)

Hardness: 6.5-7 Mohs; Color: Light blue with white/lighter bands; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None; Specific Gravity: 2.60-2.65

Hardness: 6
Color: Light blue with white/lighter bands
Luster: Vitreous to waxy

Identified May 10, 2026More mineral →

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Physical properties

Hardness: 6.5-7 Mohs; Color: Light blue with white/lighter bands; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None; Specific Gravity: 2.60-2.65

Formation & geological history

Formed in volcanic rock cavities (vugs) through the deposition of silica from groundwater. The blue bands are caused by the scattering of light by particles within the chalcedony (Tyndall effect). Most authentic specimens are from the Holgat farm in Namibia.

Uses & applications

Primarily used in lapidary work for jewelry, cabochons, beads, and metaphysical specimens. It is highly valued as a gemstone for its calming aesthetics.

Geological facts

Blue Lace Agate was first discovered in Namibia in the 1960s. Unlike dyed blue agates which have a saturated, uniform color, natural Blue Lace Agate has delicate, wavy lines and a translucent quality.

Field identification & locations

Identify by its characteristic thin bands of white and pale blue. Often found near volcanic regions or as river-worn pebbles in specific African localities. Look for transparency when held to a light source.