mineral

Polished red jasper pendant

Jasper, an opaque, microcrystalline variety of quartz (SiO₂), colored red by iron oxides

AI-generated identification · may be incorrect

Mohs hardness 6.5–7; opaque reddish-brown with a vitreous to dull luster and no visible crystal faces. Quartz has a trigonal crystal structure; jasper is typically massive and lacks cleavage, with conchoidal fracture.

Identified September 23, 2026More mineral →

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Physical properties

Formation & geological history

Forms when silica-rich fluids fill cavities or replace rock, with iron oxides producing the red color. Jasper deposits occur in rocks of many ages; the pendant’s source and geological age cannot be determined from the image.

Uses & applications

Used for cabochons, pendants, beads, and decorative objects; jasper is also collected as a lapidary material.

Geological facts

Jasper is a trade name for opaque, patterned microcrystalline quartz, rather than a single narrowly defined mineral species.

Field identification & locations

Its opaque red color and polished finish are consistent with jasper, though visual identification cannot confirm the material. It occurs worldwide, including in Brazil, India, Australia, and the United States.