Lawrence Ventura () was a 16th-century Venetian physician and alchemist who wrote about the philosopher's stone. See also Alchemical symbol History of chemistry List of alchemists List of alchemical substances Outline of alchemy Porta Alchemica Renaissance magic Spagyric Superseded theories in science Synthesis of precious metals Western esotericism notes References Sources used External links SHAC: Society for the History of Alchemy and Chemistry ESSWE: European Society for the Study of Western Esotericism Association for the Study of Esotericism Esotericism Hermeticism Natural philosophy History of science Italian scientists Italian alchemists Italian writers Italian physicians