The July birthstone is ruby, a vibrant red jewel that blazes with the heat of summer & commands recognition when set into these July band birthstone eternity rings. The dazzling July birth stones were quite treasured in ancient times & the Middle Ages, because people then thought they would protect the wearer from evil, & darkened in color when threats approached. The jewel in a ruby birthstone ring is formed from the same minerals as the sapphire, & both are usually found jointly in the same mineral deposits.