mineral
Blue Lace Agate
Silicon Dioxide (SiO2) with inclusions
Hardness: 6.5-7 Mohs; Color: Light blue with white or darker blue banding; Luster: Vitreous to waxy; Crystal Structure: Trigonal (Cryptocrystalline); Cleavage: None.
- Hardness
- 6
- Color
- Light blue with white or darker blue banding
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 Mohs; Color: Light blue with white or darker blue banding; Luster: Vitreous to waxy; Crystal Structure: Trigonal (Cryptocrystalline); Cleavage: None.
Formation & geological history
Formed through the deposition of silica from groundwater in the cavities of igneous rocks, particularly volcanic lavas. Most high-quality specimens date back to the Precambrian or Tertiary periods.
Uses & applications
Primarily used in jewelry as beads (like the necklace shown), cabochons, and decorative carvings. It is also a popular collector's mineral and used in metaphysical practices.
Geological facts
The most famous and highest quality Blue Lace Agate was first discovered in Namibia by George Swanson in the 1960s. It is known for its calming aesthetic and delicate, lace-like patterns.
Field identification & locations
Identify by its distinct light blue color and fine, wavy banding. It is primarily found in Namibia and South Africa. Collectors should look for vibrant blue color and clear, distinct banding without heavy fracture lines.
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