sedimentary
Kambaba Jasper
Stromatolite Jasper (Microcrystalline Quartz)
AI-generated identification · may be incorrectHardness: 6.5-7 (Mohs), Color: Dark green with black circular or swirling patterns, Luster: Vitreous to dull, Crystal Structure: Trigonal, Cleavage: None, Specific Gravity: 2.5-2.9
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs), Color: Dark green with black circular or swirling patterns, Luster: Vitreous to dull, Crystal Structure: Trigonal, Cleavage: None, Specific Gravity: 2.5-2.9
Formation & geological history
Formed through the fossilization of prehistoric cyanobacteria (blue-green algae) creating stromatolite structures. These are sedimentary rocks dating back approximately 3 billion years, found in the Bongolava region of Madagascar.
Uses & applications
Primarily used for lapidary work, cabochons, jewelry, interior decor, and as a popular palm stone for crystal healing and mineral collecting.
Geological facts
Despite the name 'Jasper', it is actually a fossilized algal colony (stromatolite). It represents some of the oldest evidence of life on Earth.
Field identification & locations
Identify by the distinct dark 'crocodile' green color and characteristic black orbs. It is frequently sourced from Madagascar and has a smooth, waxy feel when polished.
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