sedimentary
Red Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectMohs hardness of 6.5 to 7, earthy to vitreous luster, opaque red to brownish-red color, and a conchoidal fracture with no visible crystal cleavage.
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Physical properties
Mohs hardness of 6.5 to 7, earthy to vitreous luster, opaque red to brownish-red color, and a conchoidal fracture with no visible crystal cleavage.
Formation & geological history
Formed through the silica-rich precipitation in marine environments or hydrothermal veins, often associated with Precambrian banded iron formations.
Uses & applications
Commonly used in ornamental carvings, cabochons, tumbled stones, and holistic crystal collections.
Geological facts
Red jasper has been used since antiquity by ancient civilizations like the Egyptians and Greeks to create amulets, seals, and jewelry.
Field identification & locations
Identify by its rich red color, high hardness that scratches glass, and waxy to dull luster. Found worldwide, particularly in India, Brazil, Russia, and the USA.
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