mineral

Blue Lace Agate Geode Nodules

Chalcedony (cryptocrystalline Quartz, SiO2)

AI-generated identification · may be incorrect

Hardness: 6.5-7 on Mohs scale; Color: Light blue with white or brown banding; Luster: Vitreous to waxy; Crystal structure: Trigonal/Monoclinic; Cleavage: None; Specific gravity: 2.58–2.64

Hardness: 6
Color: Light blue with white or brown banding
Luster: Vitreous to waxy

Identified July 20, 2026More mineral →

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Physical properties

Hardness: 6.5-7 on Mohs scale; Color: Light blue with white or brown banding; Luster: Vitreous to waxy; Crystal structure: Trigonal/Monoclinic; Cleavage: None; Specific gravity: 2.58–2.64

Formation & geological history

Formed through the deposition of silica from groundwater in the cavities of igneous rocks (volcanic vesicles). These layers often take millions of years to build up, reflecting changes in water chemistry during the process.

Uses & applications

Primarily used for ornamental purposes, lapidary arts, jewelry (cabochons and beads), and as metaphysical healing stones.

Geological facts

The specific light blue color and banding of Blue Lace Agate is often attributed to the kehadiran of copper or the scattering of light by the microstructure. It was first discovered in Namibia in the 1960s.

Field identification & locations

Identify by its distinctive concentric, wavy color bands and its exterior rough 'husk'. It is most famously found in the Karas region of Namibia. In the field, look for rounded nodules with a weathered, whitish-brown exterior that reveal banding when cracked or sliced.