Moonstone pendant

The moonstone pendant is a fictional item featured in comic books published by Marvel Comics. Astronaut John Jameson went on a moon walk wherein he brought a small rock back to Earth with him. He had it fashioned into a pendant that he took to wearing around his neck. Within a short period of time however, he discovered that the pendant was causing him to transform into a werewolf. He tried removing it, but found that it had grafted itself to his skin. During a fight with Spider-Man, Spidey correctly deduced that it was the pendant that was the cause for him becoming a Man-Wolf. Not realizing that it had grafted itself to him, he tore it free from Jameson, removing several tufts of hair, and a swatch of skin. The tactic worked however, as the Man-Wolf returned to his human form upon its removal.

Appearances

 * Creatures on the Loose 30