Anhydrite (Angelite)

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Mostly commonly found in various levels of blue, Anhydrite also can be colorless, brownish, burgundy-red, grey, reddish, rose-pink, violet, and white. It is a soft stone with the hardness of 3-3.5 on the Mohs scale. 

Anhydrite was named in 1804 by Abraham Gottlob Werner from the Greek άνυδρος ("anhydros") meaning "without water", in allusion to the lack of water in its composition, in contrast to Gypsum, which contains water.

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Pronunciation: AN-hy-drite