The mineral heliotrope, also known as bloodstone, is a form of chalcedony. The “classic” bloodstone is green chalcedony with red inclusions of iron oxide or red jasper.Sometimes the inclusions are yellow, in which case the mineral is given the name plasma. The red inclusions are supposed to resemble spots of blood; hence the name “bloodstone”.
Postmortem corneal clouding with tache noire. If the eyes remain open after death, the areas of the sclera exposed to the air dry out, which results in a first yellowish, then brownish-blackish band like discoloration zone called tache noire. It is most commonly seen after 7-8 hours after death