The term "birthstone" refers to a gemstone that corresponds with the month of someone's birth. For example, January's birthstone is garnet, while February's is amethyst. There are a few different terms that can be used as synonyms for "birthstone." One is "natal stone," which comes from the Latin word for birth. Another is "birthday gem," which is a more straightforward way to describe the gemstone that corresponds with someone's birth month. "Zodiac stone" can also be used to refer to birthstones, as they are often associated with different astrological signs. Regardless of the term used, birthstones are an enduring tradition that continues to hold meaning and significance for many people today.