mineral

Likely iron-stained quartz pebble

Quartz (SiO₂), colored by iron-oxide inclusions or surface staining

AI-generated identification · may be incorrect

Small, rounded, translucent-to-opaque honey-brown specimen with a vitreous to dull luster. Quartz has Mohs hardness 7, trigonal crystal structure, no cleavage, and specific gravity about 2.65; the image alone cannot confirm the identification or measure these properties.

Identified October 16, 2026More mineral →

Explore Likely iron-stained quartz pebble in the encyclopedia →

Identify your own rocks.

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

App Store Google Play

Physical properties

Formation & geological history

Quartz forms in many igneous, metamorphic, and sedimentary settings, including veins and cavities; iron oxides can impart brown coloration. Its age and source cannot be determined from the photograph.

Uses & applications

Quartz is widely used in glassmaking, electronics, abrasives, and jewelry; this small rounded piece is primarily a low-value collector specimen.

Geological facts

Iron staining commonly produces yellow, orange, or brown tones in quartz, but similar-looking minerals can be distinguished by hardness and other tests.

Field identification & locations

The rounded shape suggests transport by water or abrasion, though it may also be tumbled. Check for glassy fracture and scratch resistance; common sources include quartz-rich gravels worldwide.