mineral

Tumbled quartz-rich stone, possibly citrine or iron-stained quartz

Quartz (SiO₂), likely limonite/goethite inclusions

AI-generated identification · may be incorrect

Translucent honey-yellow to brown, vitreous luster, granular/irregular crystalline texture, no obvious cleavage, Mohs hardness about 7, specific gravity ~2.65. The rounded edges indicate tumbling or natural abrasion.

Identified September 13, 2026More mineral →

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Physical properties

Formation & geological history

Quartz formed from silica-rich fluids in veins or cavities; yellow-brown coloration commonly results from iron-oxide staining or inclusions. The specimen’s precise age and locality cannot be determined from the image.

Uses & applications

Used as a decorative or lapidary stone, crystal-collection specimen, and occasionally jewelry material; it is not generally used as construction aggregate in this form.

Geological facts

Its appearance may resemble citrine, but naturally colored citrine is uncommon and visual identification cannot reliably distinguish it from heat-treated amethyst or iron-stained quartz.

Field identification & locations

Look for glassy luster, hardness sufficient to scratch ordinary glass, and lack of prominent cleavage; quartz commonly occurs in hydrothermal veins, geodes, and pegmatites worldwide. A scratch test and locality information would improve identification.