Smoky Quartz is one of the most effective grounding stones, who also has the ability to raise your energetic vibration when meditating. It grounds spiritual energies, neutralizes negative vibrations and teaches how to let go of things that are no use in life anymore.
On the psychological level it brings emotional peace of mind, it reduces depression and fears. It is a good healer on ambivalent feelings about incarnation because it helps to accept the physical body. It cleans the base chakra. It promotes positive and pragmatic thinking and helps with your concentration. It also helps with reducing nightmares and to accomplish your dreams.