During our research on this topic, we came across several different lists referring to different birthstones. If you are confused, so were we. Not only has the Birthstone list changed through the ages, many stones were not even classified in the ancient cultures. We were surprised to learn that your birthstone depends on which list you are looking at. There are the Mystical, Jewish, Ayurvedic, Traditional and Zodiac lists, as well as the Modern list… And perhaps a few more. The Modern Birthstone list was adopted in 1912.