Rock Identifier
Tumbled orange jasper (probable) (Microcrystalline quartz, SiO₂, colored chiefly by iron oxides) — mineral
mineral

Tumbled orange jasper (probable)

Microcrystalline quartz, SiO₂, colored chiefly by iron oxides

AI-generated identification · may be incorrect

Opaque orange-brown, earthy/waxy luster, irregular tumbled shape, and no visible cleavage; quartz hardness is about 7 Mohs and specific gravity about 2.6. The surface appears polished or naturally smoothed, though the image cannot confirm mineral identity definitively.

Identified More mineral
Explore Tumbled orange jasper (probable) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

Physical properties

Opaque orange-brown, earthy/waxy luster, irregular tumbled shape, and no visible cleavage; quartz hardness is about 7 Mohs and specific gravity about 2.6. The surface appears polished or naturally smoothed, though the image cannot confirm mineral identity definitively.

Formation & geological history

Jasper forms when silica-rich groundwater replaces or fills cavities and sediments, incorporating iron oxides that create orange-red coloration. It occurs in many ages and settings, commonly in volcanic or sedimentary environments.

Uses & applications

Used as a lapidary and ornamental stone for cabochons, carvings, beads, tumbled stones, and decorative objects; it has little industrial value.

Geological facts

Orange coloration commonly reflects hematite or goethite inclusions. It may be confused with orange aventurine, rhyolite, iron-rich chert, or dyed material.

Field identification & locations

Look for opaque color, fine grain, absence of visible individual crystals, and a glassy-to-waxy surface; a steel file should not easily scratch quartz-rich jasper. Common sources include India, Madagascar, Brazil, Australia, and the western United States.