mineral
Blue Lace Agate (Tumbled)
Chalcedony (Silicon Dioxide, SiO2)
Hardness: 6.5-7 Mohs; Color: Pale blue, grayish-blue with white/brown bands; Luster: Waxy to vitreous; Crystal structure: Trigonal/Microcrystalline; Cleavage: None; SG: 2.60-2.65
- Hardness
- 6
- Color
- Pale blue, grayish-blue with white/brown bands
- Luster
- Waxy to vitreous
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Physical properties
Hardness: 6.5-7 Mohs; Color: Pale blue, grayish-blue with white/brown bands; Luster: Waxy to vitreous; Crystal structure: Trigonal/Microcrystalline; Cleavage: None; SG: 2.60-2.65
Formation & geological history
Formed in cavities of volcanic rocks (basalts) through the deposition of silica from groundwater. The blue banding is caused by the Tyndall effect rather than metallic impurities.
Uses & applications
Metaphysical collecting, jewelry (beads, cabochons), and decorative tumbled stones.
Geological facts
Authentic Blue Lace Agate is predominantly sourced from a specific mine in Namibia. It is highly valued in crystal healing as a stone for communication and tranquility.
Field identification & locations
Identify by its distinctive thin, wavy, light blue and white bands. In its raw form, it often appears as nodular masses with a dull exterior. It can be found in Namibia, South Africa, and parts of the USA.
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