mineral

Blue Lace Agate

Banded Chalcedony (SiO2)

Hardness: 6.5-7 on Mohs scale; Color: Pale blue with white or darker blue banding; Luster: Vitreous to waxy; Structure: Cryptocrystalline (Trigonal); Cleavage: None; Specific Gravity: 2.58-2.64.

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

Identified June 8, 2026More mineral →

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Physical properties

Hardness: 6.5-7 on Mohs scale; Color: Pale blue with white or darker blue banding; Luster: Vitreous to waxy; Structure: Cryptocrystalline (Trigonal); Cleavage: None; Specific Gravity: 2.58-2.64.

Formation & geological history

Forms primarily in volcanic and metamorphic rocks when silica-rich groundwater fills cavities or veins. This specimen likely formed through the slow deposition of silica in layers over millions of years.

Uses & applications

Used extensively in jewelry (cabochons, beads), decorative carvings, and as a popular collector's stone for its soothing aesthetic.

Geological facts

Blue lace agate was first discovered in Namibia, which remains the source for the world's most high-quality material. It is a variety of chalcedony noted for its distinct, wavy lace-like patterns.

Field identification & locations

Identified by its distinctive light blue color and delicate, wavy white banding. In the field, look for silica-rich volcanic nodules. Collectors should look for high translucency and sharp, clear banding.