The Ruby is the third tier out of 6 available gems.
A player will at least need 13 Rubies to upgrade tools with. Tools have to be upgraded with an Emerald first.
Usage
| Items | Number | Notes |
       
|
1 each | Require upgrade with Emerald first |
 
|
variable | Enchanted version gives double stardust |
 
|
variable | The Ruby Key Chest has 4 item slots |
|
5 | Double the mined marble from Giant Drills |
Gems 
|
|---|
Standard Gems |
