mineral

Yellow tumbled stone, likely citrine or yellow chalcedony

Uncertain from the image; possibilities include quartz (SiO₂) or chalcedony (microcrystalline SiO₂)

AI-generated identification · may be incorrect

Small, rounded, translucent yellow piece with a smooth polished surface and vitreous-to-waxy luster. Quartz has Mohs hardness 7; chalcedony is about 6.5–7; crystal structure and cleavage cannot be determined visually here.

Identified October 7, 2026More mineral →

Explore Yellow tumbled stone, likely citrine or yellow chalcedony in the encyclopedia →

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Physical properties

Formation & geological history

If quartz or chalcedony, it formed from silica-rich fluids in veins or cavities and was subsequently tumbled or polished. The specimen’s specific geological age and origin cannot be determined from the image.

Uses & applications

Tumbled stones are commonly used for jewelry, decoration, and collecting; citrine is also cut as a gemstone.

Geological facts

Its bright yellow color alone is not enough to distinguish natural citrine from heat-treated amethyst, dyed material, or another yellow stone.

Field identification & locations

A hardness test, close inspection for dye concentration or bubbles, and gemological testing would help identify it. Quartz-family material is widespread worldwide.