Sterling silver set, Swarovski crystal birthstone charms are the final touch on our Sterling silver mother's charm pendant. Choose from any of the twelve months as follows: January=Garnet, February=Purple Amethyst, March=Blue Aquamarine, April=Cubic Zirconia, May=Emerald, June=Alexandra Lavender, July=Ruby Fushia, August=Light Green Peridot, September=Blue Sapphire, October=Rose, November=Yellow Topaz, December=Blue Zircona. Charms dangle from pendant freely and can be interchanged. Each sold separately.