mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Hardness: 3 on Mohs scale; Color: Pale yellow to golden yellow; Luster: Vitreous to waxy/greasy; Crystal Structure: Trigonal; Cleavage: Perfect rhombohedral; Specific Gravity: 2.71

Hardness: 3 on Mohs scale
Color: Pale yellow to golden yellow
Luster: Vitreous to waxy/greasy

Identified July 18, 2026More mineral →

Explore Yellow Calcite in the encyclopedia →

Identify your own rocks.

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

App Store Google Play

Physical properties

Hardness: 3 on Mohs scale; Color: Pale yellow to golden yellow; Luster: Vitreous to waxy/greasy; Crystal Structure: Trigonal; Cleavage: Perfect rhombohedral; Specific Gravity: 2.71

Formation & geological history

Formed through sedimentary processes, often precipitating from calcium-rich hydrothermal solutions or found in limestone and marble deposits. It can occur in a variety of geological ages and environments, including caves and hot springs.

Uses & applications

Used primarily as a decorative stone, in metaphysical practices, and as an ornamental specimen for collectors. Industrial uses of calcite include the manufacture of cement and lime.

Geological facts

Calcite is one of the most common minerals on Earth and is the primary constituent of limestone and marble. Yellow calcite specifically is often associated with self-confidence and hope in many cultures.

Field identification & locations

Can be identified in the field by its softness (can be scratched by a copper coin) and its strong reaction (effervescence) to cold dilute hydrochloric acid. It often feels slightly waxy to the touch.