Bloodstone is also referred to as ‘Heliptrope’. It is a green jasper with red spots. It fortifies the lymph and immune reaction. To help stimulate the immune system, place Bloodstone over the thymus (higher heart chakra), which is located in center of chest underneath the breastbone. Leave the Bloodstone in place for 20-30 minutes. One can also wear Bloodstone continuously over the higher heart chakra for the immune system.