mineral

Small rounded mineral pebble, possibly quartz

Uncertain; likely microcrystalline or crystalline SiO₂ (quartz), potentially with iron-oxide staining

AI-generated identification · may be incorrect

Pale gray-white with a faint bluish tint, rounded surface, and dull to weakly vitreous luster; apparent grain size is too small for reliable crystal identification. Quartz hardness is Mohs 7, lacks cleavage, and has hexagonal crystal structure; specific gravity is about 2.65.

Identified September 5, 2026More mineral →

Explore Small rounded mineral pebble, possibly quartz 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

Likely a naturally weathered fragment of quartz or quartz-rich rock, formed in an igneous or hydrothermal setting and later rounded by transport. Its geological age cannot be determined from the photograph.

Uses & applications

Common quartz is used in glass, ceramics, abrasives, electronics, and construction aggregate; attractive pieces may be collected but this specimen has no evident gemstone grade.

Geological facts

The image alone cannot distinguish quartz from pale feldspar, calcite, or a small concrete/man-made fragment; a scratch test and close examination are needed.

Field identification & locations

Test whether it scratches glass and does not scratch with a steel knife; quartz typically shows no cleavage and a white streak. Common worldwide, especially in stream gravels and quartz veins.