The 39 Clues Wiki
The 39 Clues Wiki

This article is about a real-world person, place, or thing. For more information, see the corresponding Wikipedia page here.


Diamond is a fake clue, hidden with aloe in the grave of Shaka Zulu. Amy and Dan found it in The Viper's Nest, but realized it was fake from a coded message in a letter from Winston Churchill, revealing the true clue. Isabel Kabra also found it, but did not find out about aloe.


Diamond is the hardest substance on earth. It is used in jewelry, and is formed by coal being heated inside of Earth. Along with Rubies, people use them in lasers. There is also a controversy over whether it is pure carbon or it is a compound.