mineral

Blue Lace Agate

Chalcedony (SiO2)

Hardness: 6.5-7 on Mohs scale; Color: Pale blue with white or darker blue bands; 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 bands
Luster: Vitreous to waxy

Identified June 25, 2026More mineral →

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Physical properties

Hardness: 6.5-7 on Mohs scale; Color: Pale blue with white or darker blue bands; Luster: Vitreous to waxy; Crystal structure: Trigonal/Microcrystalline; Cleavage: None; Specific gravity: 2.60-2.65

Formation & geological history

Formed through the deposition of silica from groundwater in the cavities of igneous rocks. Most famous deposits are from the Kalahari Desert in Namibia, dating back millions of years.

Uses & applications

Primarily used in jewelry, lapidary arts, and as a collector's gemstone. It is also highly valued in metaphysical circles for its calming properties.

Geological facts

It is a rare variety of chalcedony first discovered in Namibia in the 1960s by George Swanson. Unlike common agate, its lace-like patterns are remarkably delicate.

Field identification & locations

Identify in the field by its distinct light blue color and concentric, wavy white banding. It is often found in volcanic rock nodules. Mainly found in Namibia and parts of South Africa.