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Modrinth · Minecraft mod
Crystal Opacity
Allows you to change how see through a crystal is with lots of settings. or how transparent they are
Choose a version Pick your version below, then grab the matching file.
Quick answer
Which Crystal Opacity release should I use?
Latest stable file 1.21
Game version 1.21
Loader Fabric
Crystal Opacity 1.21 targets 1.21 with Fabric. It must be installed on the client. Do not install it on the dedicated server. No extra mods listed for this file.
Where it goes
Is Crystal Opacity required on the client, server, or both?
It must be installed on the client. Do not install it on the dedicated server.
Client Required
Dedicated server Not supported
Loader for this release Fabric
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume
This file is marked client-only.
What else does Crystal Opacity 1.21 need?
1.21. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Crystal Opacity without breaking your instance.
Built for Crystal Opacity 1.21. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.21. It targets 1.21 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
It must be installed on the client. Do not install it on the dedicated server.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.21. It opens that exact file at the source.
About this project
What does Crystal Opacity add?
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
What it looks like
1.18.4 - 1.17.3 fabric loader
Project description from Modrinth.
Pick your setup
Crystal Opacity by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Minecraft version
1.21.10
1 loader buildMinecraft version
1.21.9
1 loader buildMinecraft version
1.21.8
1 loader buildMinecraft version
1.21.7
1 loader buildMinecraft version
1.21.6
1 loader buildMinecraft version
1.21.5
1 loader buildMinecraft version
1.21.4
1 loader buildMinecraft version
1.21.3
1 loader buildMinecraft version
1.21.2
1 loader buildMinecraft version
1.21.1
1 loader buildMinecraft version
1.21
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Crystal Opacity versions and loaders
1.21
CrystalOpacity-1.21.jar
7 Mar 2026
Client Required Server Not supported Dependencies No extras listed Listed on Release listing
Check the 1.21 · Fabric setup 1.21Fabric release
1.21.11
CrystalOpacity-1.21.11.jar
6 Mar 2026
Client Required Server Not supported Dependencies No extras listed Listed on Release listing
Check the 1.21.11 · Fabric setup 1.21.11Fabric release
1.21.10
CrystalOpacity-1.21.10.jar
6 Mar 2026
Client Required Server Not supported Dependencies No extras listed Listed on Release listing
Check the 1.21.10 · Fabric setup 1.21.10Fabric release
1.21.9
CrystalOpacity-1.21.9.jar
6 Mar 2026
Client Required Server Not supported Dependencies No extras listed Listed on Release listing
Check the 1.21.9 · Fabric setup 1.21.9Fabric release
1.21.8
CrystalOpacity-1.21.8.jar
6 Mar 2026
Client Required Server Not supported Dependencies No extras listed Listed on Release listing
Check the 1.21.8 · Fabric setup 1.21.8Fabric release
1.21.7
CrystalOpacity-1.21.7.jar
6 Mar 2026
Client Required Server Not supported Dependencies No extras listed Listed on Release listing
Check the 1.21.7 · Fabric setup 1.21.7Fabric release
1.21.6
CrystalOpacity-1.21.6.jar
6 Mar 2026
Client Required Server Not supported Dependencies No extras listed Listed on Release listing
Check the 1.21.6 · Fabric setup 1.21.6Fabric release
1.21.5
CrystalOpacity-1.21.5.jar
6 Mar 2026
Client Required Server Not supported Dependencies No extras listed Listed on Release listing
Check the 1.21.5 · Fabric setup 1.21.5Fabric release
1.21.4
CrystalOpacity-1.21.4.jar
6 Mar 2026
Client Required Server Not supported Dependencies No extras listed Listed on Release listing
Check the 1.21.4 · Fabric setup 1.21.4Fabric release
1.21.3
CrystalOpacity-1.21.3.jar
6 Mar 2026
Client Required Server Not supported Dependencies No extras listed Listed on Release listing
Check the 1.21.3 · Fabric setup 1.21.3Fabric release
1.21.2
CrystalOpacity-1.21.2.jar
6 Mar 2026
Client Required Server Not supported Dependencies No extras listed Listed on Release listing
Check the 1.21.2 · Fabric setup 1.21.2Fabric release
1.21.1
CrystalOpacity-1.21.1.jar
6 Mar 2026
Client Required Server Not supported Dependencies No extras listed Listed on Release listing
Check the 1.21.1 · Fabric setup 1.21.1Fabric release
Looking for an older file? The official Modrinth project page is in Resources.
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