Desert roses selenite gypsum sold by the piece.

A desert rose is an intricate rose-like formation of crystal clusters of gypsum The crystals form a circular array of flat plates, giving the rock a shape similar to a rose blossom. Desert roses also have spiritual importance for people of many civilizations and is a common choice for meditation and healing practices since it is said to cleanse and purify energy and is frequently associated with purity and clarity. These guys come from Mexico and range in size from 2-2.5"