Calcite

Calcite is a classic calcium carbonate mineral admired for its wide variety of crystal habits and colors. While often colorless or white, it can also display attractive shades of yellow, orange, pink, or green. With its perfect rhombohedral cleavage, intense luster, and fascinating optical effects, calcite specimens are among the most diverse and collectible in the mineral world. Found in many vital localities worldwide, they often form striking crystal clusters highly prized by collectors.