gemstone

Polished jasper pendant

Jasper, an opaque microcrystalline variety of quartz (SiO₂), likely brecciated or patterned jasper

AI-generated identification · may be incorrect

Hardness about 6.5–7 Mohs; opaque mustard-yellow, brown, and reddish areas with a polished, waxy-to-vitreous luster. Quartz crystals are microscopic, so no visible crystal faces; conchoidal fracture when unworked.

Identified October 2, 2026More gemstone →

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Physical properties

Formation & geological history

Jasper forms when silica-rich fluids or sediments become silicified, often incorporating iron oxides that create its colors and patterns. It occurs in rocks of many ages; the pendant’s exact locality and age cannot be determined from appearance alone.

Uses & applications

Used for pendants, beads, and decorative objects; jasper is also collected as an ornamental stone.

Geological facts

Jasper is a chalcedony variety colored by impurities, especially iron oxides; its patterns can resemble breccia or landscape scenes.

Field identification & locations

The opaque, multicolored pattern and polish are consistent with jasper, but visual identification cannot establish its precise variety. Jasper is found worldwide, including India, Brazil, Australia, and the United States.