mineral

Red-and-white jasper/chalcedony pebble

Microcrystalline quartz (SiO₂), likely hematite- or iron-oxide-bearing jasper with white chalcedony/quartz

AI-generated identification · may be incorrect

Opaque brick-red to salmon-red, white matrix, waxy to dull luster, cryptocrystalline quartz, no visible cleavage, conchoidal fracture; Mohs hardness about 6.5–7 and specific gravity ~2.6.

Identified September 13, 2026More mineral →

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Physical properties

Opaque brick-red to salmon-red, white matrix, waxy to dull luster, cryptocrystalline quartz, no visible cleavage, conchoidal fracture; Mohs hardness about 6.5–7 and specific gravity ~2.6.

Formation & geological history

Silica-rich groundwater or volcanic fluids deposited and cemented microcrystalline quartz, with iron oxides producing the red coloration; likely formed in a volcanic or sedimentary environment, with age dependent on locality.

Uses & applications

Used as a lapidary and ornamental stone for cabochons, beads, carvings, and tumbled specimens; usually modest commercial value.

Geological facts

The red color commonly comes from finely dispersed hematite or related iron oxides, while the white portion is chalcedony or quartz. Its pattern and color boundaries are natural mineral textures, not necessarily paint.

Field identification & locations

Identify by its hardness, heft, waxy surface, opaque red coloration, and resistance to scratching by a steel knife; it should scratch glass but not be scratched by steel. Common jasper occurs worldwide, especially in volcanic terrains and silica-rich gravels.