mineral

Red jasper pebble (likely)

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

AI-generated identification · may be incorrect

Opaque brick-red to burgundy pebble with a smooth, water-worn surface and dull-to-waxy luster. Quartz hardness is about 7 Mohs; microscopic crystals make its structure too fine to see unaided. Exact identification is uncertain from the image alone.

Identified September 27, 2026More mineral →

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Physical properties

Formation & geological history

Jasper forms when silica-rich fluids fill and cement sediments or volcanic cavities, with iron oxides producing red colors. It occurs in rocks of many geological ages and is commonly exposed in streams and beaches after weathering.

Uses & applications

Used for beads, cabochons, carvings, and decorative objects; this small pebble has little industrial or construction value.

Geological facts

Jasper is a variety of chalcedony, composed of extremely fine quartz crystals; its patterns and colors vary with mineral impurities.

Field identification & locations

Look for an opaque red pebble with a fine-grained texture, no visible cleavage, and a waxy or matte surface; a scratch test is more reliable than color alone. Red jasper is found worldwide, including in stream and beach gravels.