Gypsum is a soft, evaporite mineral. Gypsum is one of the few minerals that you can easily scratch with your fingernail. This mineral is characterized by a white streak and a pearly to glassy luster.
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.