- Emerald is the birthstone for May and traditionally marks the 20th and 35th anniversaries.
- The oldest emeralds are almost 3 billion years old.
- Placing an emerald under the tongue gives the ability to foresee the future, reveal the truth and protect against evil spirits.
- Emeralds are believed to cure diseases like cholera and malaria and make the wearer an eloquent speaker.
Source: Gemological Institute of America