mineral

Green Calcite

Calcium Carbonate (CaCO3)

Hardness: 3 on Mohs scale; Color: Pale green to seafoam green with white banding; Luster: Vitreous to waxy; Crystal Structure: Trigonal; Cleavage: Perfect rhombohedral.

Hardness: 3 on Mohs scale
Color: Pale green to seafoam green with white banding
Luster: Vitreous to waxy

Identified July 10, 2026More mineral →

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Physical properties

Hardness: 3 on Mohs scale; Color: Pale green to seafoam green with white banding; Luster: Vitreous to waxy; Crystal Structure: Trigonal; Cleavage: Perfect rhombohedral.

Formation & geological history

Formed through sedimentary processes or as a secondary mineral in hydrothermal environments; often found in limestone or marble veins. It typically forms in marine environments where calcium carbonate precipitates from seawater.

Uses & applications

Primarily used for decorative carvings, lapidary items like this polished tower (obelisk), metaphysical/collection purposes, and in some industrial lime production.

Geological facts

Calcite is one of the most common minerals on Earth. The green color in this specific variety is often attributed to impurities or inclusions trapped during the crystal growth process. It is highly reactive to dilute hydrochloric acid, which will cause it to effervesce.

Field identification & locations

Identify by its characteristic soft green color, waxy luster when polished, and low hardness (can be easily scratched by a steel knife). Common locations include Mexico, Brazil, and Pakistan.