A Ruby can be found by having the Gem Finder, which is bought in the shop for Coins.png 1,000 after Crafting a Community Center 1.

Ruby Rarity Average time per ruby value
Ruby.png
1/500,000 Almost a week

(~6 days)

Coins.png
500,000

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.

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