mineral

Pale yellow tumbled stone, possibly calcite or quartz

Uncertain; likely calcite (CaCO₃) or pale chalcedony/quartz (SiO₂)

AI-generated identification · may be incorrect

Small, rounded and polished, cream-yellow with a waxy to vitreous luster; apparent hardness is indeterminate from the image—calcite is Mohs 3, quartz 7. No visible cleavage or crystal faces.

Identified August 14, 2026More mineral →

Explore Pale yellow tumbled stone, possibly calcite or quartz in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Small, rounded and polished, cream-yellow with a waxy to vitreous luster; apparent hardness is indeterminate from the image—calcite is Mohs 3, quartz 7. No visible cleavage or crystal faces.

Formation & geological history

Calcite commonly forms in veins, limestone, and hydrothermal deposits; chalcedony forms from silica-rich groundwater in cavities and volcanic rocks. Geological age cannot be determined visually.

Uses & applications

Likely a low-value lapidary or decorative tumbled specimen, sometimes used in craft jewelry and collections.

Geological facts

The color may result from iron or other trace impurities. A steel-knife scratch and dilute vinegar test can help distinguish candidates, though testing may damage it.

Field identification & locations

Identify in the field by testing: calcite fizzes weakly with dilute hydrochloric acid and scratches easily; quartz does not fizz and resists a knife. Common sources include Mexico, Brazil, India, and the United States.