Smoky Quartz is an excellent stone for grounding the wearer.  It will protect you from negativity and transmute the energy.  This stone is great for physical healing as it is an earth star chakra stone.  Smoky Quartz is also an excellent protector when performing any type of psychic work.

Black Onyx is a powerful protection stone.  It can transmute negative energy and aids in the development of emotional and physical strength.  Black Onyx can be used to encourage happiness and good fortune.  This stone helps one to become the master of their own fate.