The September birthstone sapphire is renowned for its glorious deep blue. These sapphire birth stone eternity rings showcase this marvelous naturally blue gemstone set alongside classic white diamonds and finished in one of our spectacular platinum eternity settings. The blue sapphire September birthstones were once believed to cool the temperament of the wearer, and promote intellectual acuity. Your September birthstone is exquisite in this dazzling birthstone eternity wedding rings collection.