metamorphic
Polished jasper pendant
Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly colored by iron oxides
AI-generated identification · may be incorrectThe pendant is polished, reddish-brown with darker mottling. Quartz has Mohs hardness 7, a vitreous-to-waxy luster, and trigonal crystal structure; jasper is too fine-grained to show visible cleavage or crystals.
Identified More metamorphic →
Explore Polished jasper pendant in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
The pendant is polished, reddish-brown with darker mottling. Quartz has Mohs hardness 7, a vitreous-to-waxy luster, and trigonal crystal structure; jasper is too fine-grained to show visible cleavage or crystals.
Formation & geological history
Jasper forms as silica-rich material crystallizes or replaces sedimentary and volcanic rocks; iron and other impurities create its colors. It occurs in deposits of varied ages worldwide.
Uses & applications
Used for jewelry, carvings, and decorative objects; this specimen is mounted as a pendant.
Geological facts
Jasper is a trade name for opaque, patterned chalcedony and can resemble other iron-stained or brecciated stones.
Field identification & locations
Look for an opaque, densely patterned stone with a smooth polish and no visible grains; hardness and pattern alone may not confirm jasper. Common sources include India, Brazil, Australia, and the western United States.
More like this
