Birthstone for September born people and those belonging to the sun sign of Virgo i.e. born between August 23 and September 23 is Sapphire. The color associated with sapphire is deep blue. Sapphire stands for qualities such as truth, consistency and sincerity. September birthstone believed to cure health problems such as inflammations, burns, hearing problems, cancer and fever. It is said that a person who wears Sapphire becomes a positive thinker and develops good insight of things and situations.