Also known as Sand rose, Sahara rose, Rose rock, Selenite rose, Gypsum rose and Baryte (barite) rose.
The rose-like (rosette) crystals are crystal clusters of gypsum or baryte, which include abundant sand grains
The rosette crystals form in arid sandy conditions (an area that hasexcessive heat and inadequate, variable precipitation, likethe evaporation of a shallow salt basin)