OP Ruby Addon
An ancient and long-forgotten ruby returns to the world. Villagers dream of possessing it and will reward those who bring it to them with greater riches than ever before.
Screenshots
About this Mod
OP Ruby Addon (Fabric)
This mod adds a vanilla-friendly Ruby as a rare, late-game resource to Minecraft. Rubies are designed to reward deep exploration and progression beyond diamond, while staying consistent with the vanilla experience.
Ruby ore generates naturally deep underground in caves and can also be found inside woodland mansions. The ore can be mined with a diamond pickaxe or better. Mining ruby ore yields Ruby Scraps, which can be crafted into full Rubies.
Rubies are primarily used for villager trading. The Armorer is the only villager profession that values rubies and offers powerful trades in return, including enchantment table–style enchantments for Netherite armor when the correct amount of rubies is provided. This makes rubies a valuable late-game currency rather than a replacement for emeralds.
Crafting & Blocks
4 Ruby Scraps (star pattern) + 1 Emerald (center) → Ruby
9 Rubies → Ruby Block
Ruby Block → 9 Rubies
Ruby Blocks can also be used as decorative blocks
Important Information
- Mod Loader: Fabric only
- Minecraft Version: 1.21.1
- Side: Client & Server
- World Generation: Creating a new world is highly recommended to ensure proper ruby ore generation
- Multiplayer: The mod must be installed on both the server and all players’ clients
Available Versions
How to Install OP Ruby Addon on Your Server
Order Server
Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "OP Ruby Addon". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1
Server-side
✓ RequiredRecommended RAM
6 GB(min. 4 GB)Frequently Asked Questions
OP Ruby Addon server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is OP Ruby Addon compatible with fabric?
OP Ruby Addon officially supports fabric for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with OP Ruby Addon – how to optimize performance?
Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if OP Ruby Addon consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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