mineral

Tumbled yellow quartz (likely citrine or iron-stained quartz)

Quartz, SiO₂; yellow color may result from iron staining, but the photo cannot confirm citrine

AI-generated identification · may be incorrect

Hardness 7 Mohs; translucent yellow to cream, vitreous luster, trigonal crystal structure, no cleavage and conchoidal fracture. Tumbled polishing rounds its edges; specific gravity is about 2.65.

Identified October 10, 2026More mineral →

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Physical properties

Hardness 7 Mohs; translucent yellow to cream, vitreous luster, trigonal crystal structure, no cleavage and conchoidal fracture. Tumbled polishing rounds its edges; specific gravity is about 2.65.

Formation & geological history

Quartz forms in many geological settings, including hydrothermal veins and pegmatites; iron impurities can color it yellow. Its geological age and whether the color is natural cannot be determined from the image.

Uses & applications

Used for jewelry, decorative objects, and mineral collecting.

Geological facts

Commercial ‘citrine’ is often heat-treated amethyst, and yellow quartz may also be artificially colored.

Field identification & locations

Quartz is widespread worldwide; identify it by its glassy appearance, hardness, and lack of cleavage. This small, polished specimen is consistent with quartz, but its exact variety requires closer examination.