Rock Identifier
Orange jasper (likely iron-rich jasper pebble) (Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored by iron oxides) — mineral
mineral

Orange jasper (likely iron-rich jasper pebble)

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

AI-generated identification · may be incorrect

Opaque, mottled orange-brown with a polished or naturally smooth surface; quartz hardness about 6.5–7 Mohs, vitreous to dull luster, no visible cleavage, and trigonal crystal structure at microscopic scale. The image alone cannot confirm exact mineral identity.

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Physical properties

Opaque, mottled orange-brown with a polished or naturally smooth surface; quartz hardness about 6.5–7 Mohs, vitreous to dull luster, no visible cleavage, and trigonal crystal structure at microscopic scale. The image alone cannot confirm exact mineral identity.

Formation & geological history

Jasper forms when silica-rich fluids or sediments become cemented and colored by iron oxides; deposits occur in many ages and geological settings, including volcanic and sedimentary terrains.

Uses & applications

Used for beads, cabochons, carvings, and decorative objects; also collected as a polished pebble.

Geological facts

Jasper is valued for its opaque color patterns, unlike typically translucent agate; iron minerals commonly create its red, yellow, or brown hues.

Field identification & locations

Look for opacity, fine texture, and hardness sufficient to scratch glass; common sources include India, Brazil, Australia, and the western United States. The pictured orange pebble is suggestive, not definitively identifiable from appearance alone.