Tourmaline is an excellent stone for grounding and protection, but it's also an excellent mental healer and energy cleanser. When met with the clearing vibration of Quartz this combination is extra grounding and opens the Crown under a boundaried vibration.
Quartz is a master healer and Black Tourmaline a master negativity blocker. Place this piece in the home where others gather for a constant energy sweep and a more balanced ambiance. These two stones are indeed opposites but work incredibly well together to facilitate peace and alignment. This would also be a great piece to use during meditation when decisions are on the horizon and duality in life choices simply can’t be avoided.