Black Star Diopside has these little stars in the stone, because as they were forming there was tiny slivers of magnetite also present in the molten stone. These tiny slivers align in such a way to form these stars known as asterism. A very special stone in deep black! Black Star Diopside has a strong grounding and healing energy. Deposits of this various colours of this stone has been found in a large number of locations, including Sweden, Germany, Russia, China, India, Canada and the USA.