Crystallized rhodochrosite

Rhodochrosite is a mineral characterized by its pink to red crystals, often forming in bands with lighter and darker shades. Its chemical composition is primarily manganese carbonate. This mineral is notable for its formation in hydrothermal deposits or metamorphic veins. Historically, rhodochrosite is known to have been discovered in the early 19th century and is particularly associated with Argentina, where it is considered the national stone. It is also found in Colorado, USA, where it often occurs in impressive stalactitic formations.

This stone measures approximately 4 cm.