The Cardio~Vascular System

Heart	Charoite, Cuprite, Dioptase, Garnet, Rhodonite, Rose Quartz
Circulatory System and Blood	Amethyst, Bloodstone, Chalcedony, Cuprite, Hematite, Red Jasper
Veins	Pyrolusite, Snowflake Obsidian, Variscite
Capillaries	Dendritic Agate