As natural and unique artifacts, crystals are popular gifts for loved ones and friends. The formation of crystals is why some believe they each have their own set of unique healing vibrations. Crystallization is the process through which liquids cool and start to harden, making certain molecules in the liquid gather together, becoming stable. While some crystals take millions of years to grow, and others take only a little while, they all use the earth’s natural resources and energy in the growing process.