sedimentary
Brecciated Red Jasper
Microcrystalline Quartz (Chalcedony), SiO2
Hardness of 6.5 to 7 on the Mohs scale, predominantly red with grey or white veining, vitreous to dull luster, microcrystalline crystal structure, conchoidal fracture, specific gravity of 2.58 to 2.91.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, predominantly red with grey or white veining, vitreous to dull luster, microcrystalline crystal structure, conchoidal fracture, specific gravity of 2.58 to 2.91.
Formation & geological history
Formed from silicon-rich sediments in marine or hydrothermal environments that underwent tectonic stress, fracturing the rock, which was subsequently cemented back together by silica or other minerals.
Uses & applications
Used for jewelry, lapidary arts, decorative items, and as a collector specimen.
Geological facts
Brecciated jasper gets its distinctive mosaic pattern from natural fracturing of the original rock followed by healing with mineral-rich fluids.
Field identification & locations
Can be identified by its opaque red color, hardness, and broken, angular patterns cemented by veins. Commonly found worldwide including India, Brazil, Russia, and the USA.
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