When a stone contains two or more crystals, it means that it has the power of both of those stones, and additional power to promote harmony, since the stone, by its very nature, must create harmony between the two stones that work within it.

An effective grounding stone, Tourmaline Quartz strengthens the body’s energy field against external invasion and deflects detrimental environmental influences. 

The clear quartz is an amplifier while the black tourmaline is a cleansing, grounding influence. It is often seen as a symbol of unity and is an effective problem solver.  It eliminates crystalized patterns, which are, or may have been, destructive in one's own life and releases tensions at any level. It's liberating power against negative energy can be used to assist us to actualize the strength needed to alleviate negative or hostile relationships and situations. Tourmaline Quartz balances yin and yang energies. It harmonizes disparate and opposite elements and polarities and turns negative thoughts and energies into positive ones. Psychologically, it helps to integrate and heal the shadow energies, alleviating self-sabotage.