Tourmaline is a hard mineral with a glassy to pearly luster. Commonly black, tourmaline can also be green, brown, red, blue, yellow or pink. Tourmaline is a mineral family, known as the Tourmaline Mineral Group. Tourmaline occurs in igneous rock, does not significantly degrade, and has uses as gemstones and in high-pressure gauges.
An information card with details on the mineral formation, characteristics, and uses is included. Typical samples sizes are generally 1-2 inches in length or width but can vary based on availability and natural crystal shape.
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 years.
May have sharp edges.