Comes packaged on a card with the corresponding month!

18k Gold Plated 1 micron thick (about 10 times thicker than a standard plating) over Brass

January: Garnet (Dark red)
February: Amethyst (Purple)
March: Aquamarine (Light Blue)
April: Diamond (Clear)
May: Emerald (Green)
June: Alexandrite (Light pinkish-purple)
July: Ruby (red)
August: Peridot (Light Green)
September: Sapphire (Dark Blue)
October: Tourmaline (Pink)
November: Topaz (Golden Yellow)
December: Tanzanite (Blue)