The July birthstone is the ruby, a vibrant scarlet jewel that blazes with the heat of summer & commands recognition when fixed into one of these July band eternity rings. The striking July birth stones were quite prized in ancient times & the Middle Ages, because people at the time believed they could protect the wearer from evil, and darkened in color when threats approached. The ruby birth stone forms from the same minerals as sapphire, and both are regularly found together in the same mineral deposits.