Trading Rubies - Slexom/earth2java GitHub Wiki
In Minecraft Earth rubies are the in-game currency and are used to buy boosts. Similar to boosts Minecraft have potions. The rubies you found during your adventures can be exchanged for potions by trading with a new Wandering Merchant.
Trades
The trader will offer you a selection of 8 potions and a Mud Bucket. Every trader will sell different potions.
Currency
The trader by default use the mod Ruby item as currency. In the configuration file, can be replace with any item included in tags:
forge:gems/ruby
(Forge)c:rubies
(Fabric)
If Ruby generation is disabled, and the mod Ruby is used as currency, the trader will use Emeralds instead.