Raven Stone: Scottish Jet.Found only in Fife, originates from the petrified Forrest under the Firth of Forth. These pieces are from St Andrews, Fife. Very rare. Used by the Picts, and revered by Celtic cultures. Powerful cleanser. Helps draw out negative energy. Helps control mood swings and fights deep depression. Used during the grieving process. An excellent calming stone, and helpful for treating epilepsy, migraines, stomach pain, colds, glandular problems, and lymphatic problems.