The mineralogy of the angelite does not know. There is no angelite among the list of rocks, precious and semi-precious stones. The resounding name of the gem came into use only 30 years ago: the discovery of blue anhydrite deposits in Peru pushed marketers to create a new commodity trend. Angelite acquired its name thanks to the unusual coloring of stones in blue and purple tones. Angelita's second name also sounds very attractive - the stone of angels. The mineral has an unusual property, which is that when exposed to water Angelite turns into gypsum, so the main rule when handling this stone is that it should be protected from any exposure to moisture. Angelitis is a typical representative of the varieties of anhydrous calcium. The color of the stone in nature is both white and blue, grayish, purple and reddish. The mineral is characterized by: glass luster, hardness - 3,0-3,5 and density in the range of 3,0-3,5 g/m3. The main Angelita deposits are known in the USA, Switzerland, Germ