The idea of gemstones being associated with certain months originated centuries ago and in many different cultures. It was believed that particular stones had talismanic properties that are heightened when worn at the right time of year.

The traditional birthstone list reflects ideas that date back centuries but have no documented origin, and as a result it differs from source to source. The modern birthstone list is the official list adopted by the American National Association of Jewelers in 1912.

Birth Month Traditional Stone Modern Stone
January Garnet, Rose Quartz Garnet
February Amethyst, Onyx Amethyst
March Bloodstone, Jade Aquamarine
April Diamond, Rock Crystal Diamond
May Emerald, Chrysoprase Emerald
June Alexandrite, Moonstone Pearl
July Carnelian Ruby
August Sardonyx Peridot
September Sapphire, Lapis Lazuli Sapphire
October Tourmaline Opal
November Citrine Topaz
December Turquoise Zircon