mineral

Blue Lace Agate

Chalcedony (SiO2) with trace impurities

Hardness: 6.5-7 (Mohs scale). Color: Light blue with white or darker blue banding. Luster: Vitreous to waxy. Crystal structure: Trigonal/Monoclinic (Cryptocrystalline). Cleavage: None. Specific gravity: 2.58-2.64.

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

Identified March 9, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the deposition of silica from groundwater in cavities (vugs) of igneous rocks, particularly volcanic lavas. Most authentic specimens originate from the Ysterputs mine in Namibia.

Uses & applications

Predominantly used for lapidary arts, jewelry (cabochons, beads), and as a popular specimen for gemstone collectors and metaphysical enthusiasts.

Geological facts

It was first discovered in the early 1960s by George Swanson in Namibia. It is considered a rare variety of chalcedony due to its specific delicate banding and unique pale blue hue.

Field identification & locations

Identified in the field by its distinct translucent 'lace' banding and pale blue color. Commonly found in Namibia, South Africa, and occasionally Brazil. Collectors should look for vibrant banding and lack of artificial dyes.

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