heliotrope

Semiprecious stone composed of dark green chalcedony with flecks of red jasper that were thought to resemble drops of blood. Bloodstones, when submerged in water, give a reddish reflection. They were occasionally used in ancient times as cylinder seals, during the Middle Ages for sculptures representing the flagellation of Christ, and currently as gemstones in jewelry.

Vocabulary
Term variations: 
heliotrope (En)
bloodstone (En)
bloodstones (En)
jaspe sanguin (Fr)
jaspes sanguins (Fr)
héliotrope (Fr)
Term_fr: 
héliotrope