A variety of chalcedony. Strengthens and oxygenates bloodstream. Enhances physical/mental vitality. Strengthens heart, spleen, bone marrow. Aids in balancing iron deficiencies. Reduces emotional/mental stress. Powerful physical healer. Stimulates movement of kundalini. Links root chakra with heart. Inner guidance, altruism, idealism. A highly evolved mineral. (1,4)