mineral

Yellow quartz pebble

Quartz (SiO₂), likely iron-stained or naturally yellow quartz; exact variety cannot be determined visually

AI-generated identification · may be incorrect

Pale yellow to golden, translucent, with a glassy-to-dull luster and irregular fracture; quartz has Mohs hardness 7, a trigonal crystal structure, and no cleavage. The photograph does not show diagnostic crystal faces, so color and texture alone are inconclusive.

Identified September 29, 2026More mineral →

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Physical properties

Formation & geological history

Quartz forms in many igneous, metamorphic, and sedimentary settings, including veins and weathered gravel; iron-oxide staining can produce yellow tones. Its age depends on the source rock and cannot be inferred from the image.

Uses & applications

Quartz is used in glass, electronics, abrasives, and decorative stone; attractive colored pieces may be collected or used in jewelry.

Geological facts

Quartz is one of Earth’s most abundant minerals. Yellow color alone does not establish citrine, which is a specific gem variety of quartz.

Field identification & locations

The specimen appears to be a small, rounded, rough pebble, but a scratch test, streak, and closer examination would help confirm quartz and distinguish it from other yellow minerals. Quartz is common worldwide in veins and river or beach gravels.