Birthstones
A birthstone is a gift of a precious material (jewelry, mainly gemstones; themselves traditionally associated with various qualities) that symbolizes the month of birth (in the Gregorian Calendar). It is sometimes also called birthday stone (cf. infra; but that word is, confusingly, sometimes used as a synonym for an anniversary gift, which is related to the recipient's age, i.e. year of birth).
There have been many different sets of birthstones used throughout history and in different cultures. In 1912, in an effort to standardize them, the American national association of jewelers, Jewelers of America, officially adopted the following list; it is currently the most widely used list in the United States and many other locations, including Australia and Thailand. Some alternates have been adopted to be a less expensive substitute for a cut stone.
| Month | Birthstone | Alternate |
|---|---|---|
| January | Garnet | Rose Quartz |
| February | Amethyst | Onyx |
| March | Aquamarine | Red Jasper ('Bloodstone') |
| April | Diamond | Rock Crystal (Quartz) |
| May | Emerald | Chrysoprase |
| June | Pearl (the only non-mineral) | Alexandrite or Moonstone |
| July | Ruby | Jade or Carnelion |
| August | Peridot | Aventurine, Sardonyx, or Sapphire |
| September | Sapphire | Lapis lazuli |
| October | Opal | Pink Tourmaline |
| November | Citrine | Yellow Topaz or Turquoise |
| December | Blue Topaz | Turquoise, Tanzanite, or Zircon |