Gypsum Desert Rose Mineral Crystal Rock 1.5-2 Inch w Info Card

This Fascinating Mineral Specimen Comes With A Fact Filled Information Card.... Desert Rose is a name given to rosette formations of the mineral gypsum (calcium sulfate dihydrate.) Gypsum is an evaporite, a sedimentary rock that forms at the bottom of shallow bodies of salt water that contain calcium and sulfur. The dissolved calcium and sulfur become concentrated as the water evaporates and then precipitates as gypsum. Gypsum becomes what is known as plaster of Paris after being heated and ground to a fine powder and is used in construction. Picture is representative of the specimen you will receive. Each rock is unique and will vary in shape, size and appearance. No two rocks will be exactly alike. Also called sand rose, rose rock, selenite rose, gypsum rose, gypsum rosette. Quantity is one rock, 1.5-2 inches and weighs about 2 ounces. Ages 8 and up