
mineral
Blue Lace Agate
Banded Chalcedony (Silica/Quartz), SiO₂
Hardness: 6.5–7 on Mohs scale; Color: Light blue with white or light gray bands; Luster: Waxy to vitreous; Crystal structure: Trigonal/Microcrystalline; Cleavage: None; Specific gravity: 2.58–2.64
- Hardness
- 6
- Color
- Light blue with white or light gray bands
- Luster
- Waxy to vitreous
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Physical properties
Hardness: 6.5–7 on Mohs scale; Color: Light blue with white or light gray bands; Luster: Waxy to vitreous; Crystal structure: Trigonal/Microcrystalline; Cleavage: None; Specific gravity: 2.58–2.64
Formation & geological history
Formed in cavities (vesicles) of volcanic rocks through the deposition of silica from groundwater over millions of years. This specific variety is primarily associated with the Kalahari region.
Uses & applications
Highly popular in jewelry including beads, pendants, and cabochons. Also used for ornamental carvings, tumble polishing, and as a 'healing stone' in metaphysical practices.
Geological facts
Blue Lace Agate was first discovered in Namibia, South Africa. It is known for its delicate, lace-like patterns which are actually layers of microscopic quartz crystals.
Field identification & locations
Identified by its distinctive pale blue color and alternating wavy bands of white and blue. Commonly found in Namibia and parts of South Africa. Collectors look for high contrast in the banding and a lack of brown surface staining.
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