This listing is for one Home Protection Set which includes four (4) Blue Aura Mini Selenite Towers and four (4) pieces of rough Black Tourmaline, similar to the pairs shown above. We’ve paired these two Crystals because they can balance the energy and protect your entire home. Simply place one set in each of the four corners of your house, to protect everyone and everything inside. Our Blue Aura Home Protection Set also helps provide peace and tranquility, which promotes both physical and mental relaxation. Selenite: Cleanses and dispels negative energy and creates a safe space. Black Tourmaline: Protects against negative energy of all kinds. Forms a protective shield around your body or home. Color: Blue & Black Approximate Measurements: Selenite Mini Tower: 2.5 – 3″ H Black Tourmaline: 1+” Please expect color, pattern and size differences due to the fact that these are natural Crystals and no two are alike.