gemstone
Eyed Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, waxy luster, opaque dark green to black body color with distinct concentric ring markings, and a trigonal crystal system.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, waxy luster, opaque dark green to black body color with distinct concentric ring markings, and a trigonal crystal system.
Formation & geological history
Formed through the hydrothermal deposition of silica-rich fluids within volcanic or sedimentary rock fractures over millions of years.
Uses & applications
Widely used in ornamental carvings, polished tumbling stones, beads, and custom wire-wrapped jewelry.
Geological facts
Also known as kambaba or crocodile jasper, it often features fossilized stromatolite colonies within its matrix, dating back over two billion years.
Field identification & locations
Easily identified by its distinct circular eye patterns contrasting against a dark green base; frequently sourced from Madagascar and South Africa.
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