Discovered : 1817 by J. A. R. Arfvedson Isolated in Stockholm, Sweden Origin : From the Greek ‘lithos’ meaning stone. Description : The lightest of all metals. Lithium salts are used in greases, batteries and glass. Lithium Carbonate therapy has become standard treatment for manic depression, although its action on the brain is still not fully understood. Image : Alchemical symbol ‘lithos’ and element texture.