mineral

Blue Lace Agate (Geode/Druzy variant)

Chalcedony (SiO2) with Quartz druzy

Hardness: 6.5-7 (Mohs scale); Color: Pale blue, lavender-blue, or grey secondary to banding; Luster: Vitreous to waxy; Crystal structure: Trigonal/Microcrystalline; Cleavage: None; Specific Gravity: 2.60-2.65

Hardness: 6
Color: Pale blue, lavender-blue, or grey secondary to banding
Luster: Vitreous to waxy

Identified May 7, 2026More mineral →

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Physical properties

Formation & geological history

Formed via the deposition of silica from groundwater in cavities of igneous rocks, specifically volcanic lavas. Over millions of years, layering occurs, sometimes leaving a hollow center containing 'druzy' quartz crystals. Typical geological ages range from the Cretaceous to recent periods.

Uses & applications

Primarily used in jewelry, ornamental carvings, and lapidary arts. It is highly valued by crystal collectors for its aesthetic appeal and is used in metaphysical practices for its perceived calming effects.

Geological facts

This specific specimen is carved into a heart shape and features a 'druzy window' where the inner quartz crystals are visible. Blue Lace Agate was first discovered in Namibia, which remains a primary source for high-quality blue specimens.

Field identification & locations

Identify by characteristic concentric blue and white banding and its hardness (it will scratch glass). In the field, look for nodules in volcanic regions like Namibia, Brazil, or the US Southwest. Polished pieces like this are common in rock shops.

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