Birthstones
You may be surprised to know that each month of the year often has not one, but several birthstones. They are as follows:
January - Garnet
February - Amethyst
March - Aquamarine
April - Diamond
May - Emerald
June - Pearl, Moonstone and Alexandrite
July - Ruby
August - Peridot and Spinel
September - Sapphire
October - Opal and Tourmaline
November - Citrine and non-blue topaz
December - Blue Topaz, Tanzanite, Turquoise, Zircon
Learn more about the stones for each anniversary here.