Birthstone rosaries have a long history and connection to the bible. Did you know that birthstones originated with the twelve tribes of Israel? Moses associated each of the tribes with a gemstone and these were used on the breastplate of the high priest, Ex. 39:9-14. Twelve represents the twelve tribes of Israel, twelve Apostles and twelve months of the year. As the tradition evolved, the stones identified in the Bible became associated with specific months. See the months listed here to find your birthstone.