mineral

Blue Lace Agate

Chalcedony (SiO2)

Hardness: 6.5-7 (Mohs); Color: Soft blue with white or darker blue bands; Luster: Vitreous to waxy; Crystal structure: Trigonal/Microcrystalline; Cleavage: None; Specific gravity: 2.58-2.64

Hardness: 6
Color: Soft blue with white or darker blue bands
Luster: Vitreous to waxy

Identified February 5, 2026More mineral →

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Physical properties

Hardness: 6.5-7 (Mohs); Color: Soft blue with white or darker blue bands; Luster: Vitreous to waxy; Crystal structure: Trigonal/Microcrystalline; Cleavage: None; Specific gravity: 2.58-2.64

Formation & geological history

Formed in cavities of volcanic rocks or ancient lavas through the deposition of silica from groundwater. Most high-quality specimens originate from Namibia and South Africa.

Uses & applications

Widely used for jewelry (cabochons, beads), decorative carvings, and as a popular specimen for crystal collecting and metaphysical purposes.

Geological facts

It was first discovered in the early 20th century in Namibia. It is a variety of chalcedony distinguished specifically by its delicate, lace-like banding patterns.

Field identification & locations

Identify by its distinct concentric or wavy banding and translucent blue hue. Found primarily in Namibia, but related chalcedonies appear in Brazil and the US. It should not be confused with dyed blue agate.