Bloodstone is a variety of Opaque Chalcedony. It is dark green with red spots and blotches. It is also known as Heliotrope, from the Greek meaning Ďsun turnerí, although the derivation of this name is not known. In the Middle Age, the red spots in Bloodstone were thought to be spots of Christís blood, and special magical powers were attributed to the stones. Bloodstone deposits have been found in India, China, Brazil, Australia, and the USA.