STOW October Birthstone Charm (Opal)Opal is the birthstone for anyone born in October. This precious stone is said to provide a sense of inspiration in your life while encouraging freedom and independence. Adding a birthstone to your locket is a wonderful way to signify your own birthday or those of your loved ones. As all of our birthstones are made from natural semi precious stones each one is special and unique, just like the wearer.