Smoky Quartz

Smoky Quartz is very effective at dissolving negative emotion and so protects against negative energies. It is a useful crystal if you are dealing with difficult situations or people. It is also said to protect against pollution, radiation and electromagnetic smog.
In healing, Smoky Quartz is believed to help lift depression, reduce fear and help relieve stress. It is said to be a good pain reliever, and believed to help cramps, ease lower back pain and headaches.