Fire Gem

The Fire Gem is a gem that can be added to your Amulet when you become a Fire Ninja.

How to get the Fire Gem
You must be a member ninja, and you must own the Amulet which can be bought for 200 coins. You next have to compete in Card-Jitsu Fire. Once you achieve all the parts of the Fire Suit (the sandals, magma coat, mask, and helmet), you must then battle Sensei in a very competitive game. If you beat Sensei, he will give you the Fire Gem. This will make you closer to having a complete amulet.

Trivia

 * Once you achieve the Fire Gem, the Fire Gem on the amulet in the Ninja Hideout will start glowing.
 * Once you get the Fire Gem, you must currently wait until you get the Snow Gem as  Card-Jitsu Snow is not yet released.
 * Many penguins do not have the Fire Gem yet since the Card-Jitsu Fire matches are very long and very hard.
 * Rumors say that when you earned all the gems, you will unlock a new journey (or possibly a new room for ninjas).
 * There is a glitch where you put it on and it has the gem and on your player (Not on playercard) it will not look like it has it on.
 * You will not see it on the login screen.