ModsJava
Simple Effect Gems
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
Effect Gems is a simple mod that adds new items called “Effect Gems” that can be put in the offhand or mainhand slot to receive status effects.
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The gems can be obtained by killing a Gem Zombie. The Gem Zombie can spawn naturally throughout the world, anywhere a normal zombie can spawn. This means Gem Zombies can spawn from zombie spawners! |
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| There are a total of 12 different gems that the Gem Zombie can drop. Each one will grant a different effect when placed in the offhand slot. There is also the possibility that the Gem Zombie drops a pearl, too! |  |
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Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.11, 1.21.9, 1.21.10
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
File checked by MCModsHub
- Ships as effect-gems-1.3.6-data.jar — drop this file into the mods folder
- Download size: 129 KB
- Download link checked 2 Oct 2026 — working
These come from our own check of the pack file, not from the source page.