Lacquered Blue Sapphire Rose with Gold Trim States September BirthstoneBirthstone Month: September Sapphire Sapphires, considered a protective gemstone, were once thought to guard against evil and poisoning, shielding the wearer from physical harm. Ancient civilizations used the stone as an example when writing about faith, wisdom, purity, trust and loyalty. Greeks wore it for guidance when asking the oracle for answers. Buddhists believed the sapphire could bring spiritual enlightenment. September babies tend to be calm