Stackable birthstone rings are a great way to up the sparkle and shine. Grab one for your birthday and then grab a few more. Whether you want a colorful stack or an icy white mix, birthstone stackable rings can easily give you the shine you desire. Go for the power of purple with an amethyst stackable ring, then add a few more beautiful birthstone hues, for a look that is as bright as it is bling-worthy.