August birthstone rings feature the peridot, a lovely pale green gem in a color not seen in many other natural gems, that is simply stunning in this diamond and peridot birthstone eternity ring. August birthstone jewelry is striking and unique, which is nothing less than those born in the hottest month-- particularly under the fiery sign of Leo-- would accept. Peridot birthstone jewelry is considered calming and thought to promote romance. Another peridot birthstone meaning is purity.