Hematite:    Is a very protective stone and is great to carry to help you stay grounded in many situations.   Helps to absorb negative energy and calms in times of stress or worry.  Hematite is also good for working with the Root Chakra, helping to transform negative energies into a more positive vibration. All Black stones have the ability to help bring up from the darkness issues that need to see the light of day.   It has a positive effect on the bloodstream and the kidney and helps circulate oxygen throughout the body.