sedimentary
Kambaba Jasper
Stromatolite (Fossilized Algae)
AI-generated identification · may be incorrectHardness: 6.5-7 (Mohs scale), Color: Dark green with black circular or orbicular patterns, Luster: Vitreous to dull, Crystal Structure: Trigonal (Microcrystalline), Specific Gravity: 2.6-2.9
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs scale), Color: Dark green with black circular or orbicular patterns, Luster: Vitreous to dull, Crystal Structure: Trigonal (Microcrystalline), Specific Gravity: 2.6-2.9
Formation & geological history
Formed through the fossilization of blue-green algae (cyanobacteria) in sedimentary environments, creating stromatolite structures. It dates back roughly 3 billion years to the Archaean Eon.
Uses & applications
Mainly used as a decorative stone, for lapidary work such as cabochons, metaphysical practices, and as tumbled collector stones.
Geological facts
Despite being called 'Jasper', it is technically a fossil known as a stromatolite. It is one of the oldest known records of life on Earth.
Field identification & locations
Identify by the unique 'crocodile-skin' or 'eye' patterns in dark green and black. Primarily found in the Bongolava region of Madagascar and parts of South Africa.
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