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 January - Garnet- February - Amethyst
- March - Aquamarine or Bloodstone
- April - Diamond
- May - Emerald
- June - Pearl, Moonstone or Alexandrite
- July - Ruby
- August - Peridot or Sardonyx
- September - Sapphire
- October - Opal or Tourmaline
- November - Yellow Topaz or Citrine
- December - Blue Topaz, Turquoise,
Zircon or Lapis Lazuli
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These gemstones were officially adopted in 1912.
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