You Choose your Month: January = Red Garnet; Feburary = Purple Amethyst; March = Blue Aquamarine; April = White Diamond; May = Green Emerald; June = Pink Ice; July = Red Ruby; August = Green Peridot; September = Blue Sapphire; October = Opal or Tourmaline; November = Yellow Topaz or Citrine; December = Blue Topaz. This item has a LIFETIME WARRANTY against cracking, peeling, chipping, wearing or tarnishing. It is layered with 50ml of gold over a semiprecious base metal. (compare to many electroplated items that are only 3-4ml thick) It has a patented tough clear coat to protect the precious metals. Warranty certificate included with item. More like this at Ks Charming Designs!