Peridot: thought to bring the wearer good luck, peace, and success. Its powers include health, protection, and sleep. The advantages of peridot are to attract love and calm anger while also soothing nerves and dispelling negative emotions. Peridot has been known to have healing effect on the gall bladder and liver. Peridot is the birthstone for Libra, Pisces, Gemini, Leo, and Virgo.