There are six different colors of gems. They are red, orange, yellow, green, blue, and purple. Players collect gems during quests or can battle for specific gems. The colour of gems that can be collected during questing is determined by the player's initial Leader Card selected in the beginning of the game.
| Initial Leader Card | Card Type | Gem Colour |
|---|---|---|
| Cheerleader♀ | Bombie | Blue & Purple |
| Grizzly Bear | Mombie | Yellow & Green |
| Surfer | Tombie | Red & Orange |
The type of gem that can be collected during questing is depended on the city the player is in.
| City | Gem |
|---|---|
| Las Vegas |       Poker Chips |
| New York |       Taxi |
| San Francisco |       Cable Car |
| Hollywood |       Star |
| Houston |       Oil Drum |
| Miami |       Palm Tree |
| Chicago |       Deep Dish Pizza |
| New Orleans |       Beads |
| Washington DC |       Capitol Building |
| Honolulu |       Tiki |
| Anchorage |       Salmon |
| Detroit |       Engine |
To find the rest of the colors they must battle other Jombies. If all of the color gems are collected for a specific collection, the player receives a rare card based on their initial Leader Card selection. For a list of rewards, see Goals. The card can only be received the first time the collection is completed. There is no incentive to completing a collection more than once.
| Basics |
|---|
| Battle • Card Decks • Energy • Experience • Force • Friends • Fusion Graveyard • Gem Collection • Goals • Shop Items • Skill Points • Tokens • Trade |