Green calcite natural prism

This stone is a natural green calcite prism, a common mineral composed of calcium carbonate. Calcite is known for its wide range of colors and crystal forms, and this green version gets its hue through small amounts of impurities such as nickel or copper. This mineral is often extracted from deposits located in China, Mexico, and Iceland. Its naturally faceted structure and translucency vary depending on the formation conditions. Historically, calcite has been used in construction and as a constituent of limestone.

This calcite measures approximately 4 cm.