A Ruby can be found by having the Gem Finder, which is bought in the shop for 
1,000 after Crafting a Community Center 1.
| Ruby | Rarity | Average time per ruby | value |
|---|---|---|---|
 |
1/500,000 | Almost a week
(~6 days) |
 |
A Ruby can be used to Upgrade your Tools, it can also be used for making Keys for Treasure Chests and making aGem Display case, which are useful for Crafting XP and can be sold for some coins.