Birth stones

There is a birthstone for every month. There are several birthstones for each, but this is the most familiar order:
 * January: Garnet
 * February: Amethyst
 * March: Aquamarine
 * April: Diamond
 * May: Emerald
 * June: Pearl
 * July: Ruby
 * August: Peridot
 * September: Sapphire
 * October: Opal
 * November: Topaz
 * December: Turquoise.