Amulet

The Amulet is a neck item in Club Penguin. Members could purchase it from the Martial Artworks catalog for 200 coins. However, it was available for Non-Members in November 2011, and new players have received it by entering the Ninja Hideout since.

It allows entering the Fire Dojo, Water Dojo and the Snow Dojo, and it allows playing Card-Jitsu Fire, Card-Jitsu Water and Card-Jitsu Snow. When mastering an element, its gem is added to the amulet. It represents the three Card-Jitsu Elements.

Updates

 * It was available to all players on November 17, 2011.

Description
The description from Martial Artworks:
 * "Behold the Amulet. A symbol of power and skill, and a key to mastering the elements. Continue your journey by opening the hidden doors in this room. The next Dojo awaits."

Gems
Once the player has become a Ninja of an element, the element's gem will be added to the Amulet:
 * Fire Gem
 * Water Gem
 * Snow Gem

Trivia

 * There used to be a sign in the Dojo Courtyard saying "HELP GOLDSMITHS BUILD AMULETS", with blueprints for the amulets and an actual amulet. It was taken down after Card-Jitsu Fire was released.
 * There is an amulet pattern on the floor of the renovated Dojo.
 * There was an amulet pattern on the floor of the Ninja Hideout
 * If you had a gem, the Amulet on the ground of the Ninja Hideout glows according to your gem(s).
 * The amulet on the floor of the renovated Dojo does not glow like that of the Ninja Hideout.
 * There was a glitch on French servers before the Amulet was released where you could see the Amulet in the Martial Artworks catalog. If you clicked to buy it, it would have a loading screen that lasts forever.
 * It is possible that the black in the middle represents Card-Jitsu Shadow or regular Card-Jitsu.
 * The Amulet's Gems glow after you earn all of the gems.