mineral

Tumbled orange chalcedony or jasper

Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/jasper

AI-generated identification · may be incorrect

Small polished fragment with orange-brown color, waxy to dull luster, and pale internal veining or brecciation. Quartz hardness is about Mohs 7, with no visible cleavage and conchoidal fracture; density is approximately 2.6 g/cm³.

Identified September 4, 2026More mineral →

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Physical properties

Formation & geological history

Formed when silica-rich groundwater filled cavities or fractures, later colored orange by iron oxides; such material commonly formed in volcanic rocks during the Cenozoic or earlier. The rounded shape indicates tumbling or cutting by people.

Uses & applications

Used for inexpensive cabochons, beads, carvings, polished stones, and decorative objects; it has little industrial value in this small form.

Geological facts

The image is insufficient for a precise identification; orange carnelian, jasper, and dyed agate can look similar. A white streak, translucent edges, and uniform color favor carnelian, while opaque mottling favors jasper.

Field identification & locations

Commonly found in volcanic regions and silica-rich gravels, including Brazil, Uruguay, India, Madagascar, and the western United States. Check translucency, hardness, and whether color concentrates along fractures; definitive identification may require microscopy or spectroscopy.