Peridot is an especially bright gemstone that brings all the best life has to offer: joy, happiness, love, health, positive energy, vitality, and enthusiasm. As a strong manifestation stone, it draws money, good fortune, and motivation. It is often called the "Study Stone" for learning a new skill like the piano or a foreign language as it engenders passion and perseverance.
A rough version of crystal is usually cut from a much larger piece of mined material that is too large or heavy to be used by a person. Rough chunks such as calcites are often acid-washed to subtly smooth out rough edges that may cause cuts or injury and to prevent further flaking or breakage.