They are natural elements from the earth everything has a vibration and its own vibration. when we get crystals and stones etc we are always told to cleanse them for a reason if touched buy others the stones or crystals absorb energy as well as give off energy, not always as much energy as some of us, All are not always real a lot of man made rocks value is the beauty of the holder. Authentic crystals and stones are grounded energy which loose it's energy the more they are cut. I use them to raise me vibration when Its low I prefer to hand pick my own if I can feel a connection to the energy it's not busy I buy.