Crystal Opacity

Allows you to change how see through a crystal is with lots of settings. or how transparent they are

3.9K Downloads

fabricdecorationequipment

Rent Server with this Mod

Screenshots

About this Mod

Crystal Opacity

Let's you make crystals transparent or see through with a opacity slider and then a per part toggle for opacity so theres

Core opacity slider
Inner glass opacity slider
Outer glass opacity slider
Extra glass opacity slider

Requires

Silicon: Silicon
Mod Menu: Mod Menu
YACL: YACL

What it looks like

1.18.4 - 1.17.3 fabric loader

Available Versions

Crystal Opacity 1.21release

MC 1.21fabric

March 7, 2026

Crystal Opacity 1.21.11release

MC 1.21.11fabric

March 6, 2026

Crystal Opacity 1.21.10release

MC 1.21.10fabric

March 6, 2026

Crystal Opacity 1.21.9release

MC 1.21.9fabric

March 6, 2026

Crystal Opacity 1.21.8release

MC 1.21.8fabric

March 6, 2026

How to Install Crystal Opacity on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).

Install Mod

Open the mod browser in the dashboard and search for "Crystal Opacity". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11, 1.21.10, 1.21.9 (+9 more)

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Crystal Opacity 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 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.

Is Crystal Opacity compatible with fabric?

Crystal Opacity officially supports fabric for Minecraft 1.21.11, 1.21.10, 1.21.9. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Crystal Opacity – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Crystal Opacity 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.