# GEM

When the Hero reaches a certain level, users can use GEM to increase the Hero's corresponding attributes; for example, only GEM Power can increase the Hero's Power Attribute.

There are six types of GEM and each GEM represents an Attribute:&#x20;

* Yellow: Power&#x20;
* Red: Heart&#x20;
* Purple: Stamina&#x20;
* Green: Speed&#x20;
* Pink: Charisma&#x20;
* Bule: Skill

#### GEM upgrade mechanism

Users can upgrade their GEM by burning IRO tokens.

|           |          |         |                             |                           |
| :-------: | :------: | :-----: | :-------------------------: | :-----------------------: |
| **Level** | **Name** | **Fee** | **Successful upgrade rate** | **Attribute plus points** |
|     1     |  Common  |   IRO   |             35%             |             2             |
|     2     |   Rare   |   IRO   |             55%             |             4             |
|     3     |   Star   |   IRO   |             75%             |             6             |
|     4     |  Glossy  |   IRO   |             100%            |             8             |

Warning: From level 1 to level 3, upgrade GEM may fail, if the upgrade fails, the users will lose tokens.
