Tourmaline is the stone of protection. Keeping negative energy, thoughts and feelings at bay, imagine it as a sponge for soaking up all that negativity! It is also a great stone to protect you from electromagnetic radiation, so perfect to keep around your workspace, TV etc.
We keep a chunk by our front door to cleanse away any negative energy entering in the home and in the car for safe travel.
Note: Tourmaline is a fairly fragile stone and can easily crumble if dropped/knocked. Each piece naturally varies slightly in shape, size and formation.