CurseForge · Minecraft mod
AE2 Crystal Science
An addon for AE2 that brings back the Purified Crystal concept and builds a full progression around it.
This page is having a moment, so a few details may be a little behind.
Quick answer
Which AE2 Crystal Science release should I use?
AE2 Crystal Science 1.21.1-1.2.1 targets 1.21, 1.21.1 with NeoForge. The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server. No extra mods listed for this file.
Where it goes
Is AE2 Crystal Science required on the client, server, or both?
The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server.
The source does not explicitly classify this release as client-only or server-only.
What else does AE2 Crystal Science 1.21.1-1.2.1 need?
AE2 Crystal Science 1.21.1-1.2.1. 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.
22 extra mods were pulled in by other dependencies. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add AE2 Crystal Science without breaking your instance.
Built for AE2 Crystal Science 1.21.1-1.2.1. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use AE2 Crystal Science 1.21.1-1.2.1. It targets 1.21, 1.21.1 with NeoForge; 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
The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server.
- 04
Pick the file you checked
Use the “Get this file” button beside AE2 Crystal Science 1.21.1-1.2.1. It opens that exact file at the source.
About this project
What does AE2 Crystal Science add?

Overview
Applied Energistics: Crystal Science (AECS) is an addon for Applied Energistics 2 that brings back the Purified Crystal concept and builds a full progression around it.
With a production chain of Dust → Seeds → Growth and dedicated machines (Grindstone / Pulverizer / Growth Chamber / Aggregator), you can mass-produce purified crystals for mid-to-late game crafting and energy generation.
On the other side, AECS adds stronger pattern execution and wireless channel solutions (Meteorite/Resonating Pattern Providers, Ender Emitter & Ender Broadcaster) to build more powerful automation.

Features
1) Purified Crystal Progression
Dust → Seeds → Growth

2) Crystal Tools
Ender / Meteorite / Resonating toolsets.

3) Machine Side Configuration
Configure each face for input/output/bidirectional/disabled, and automate import/export behavior.

4) Quartz Grindstone
Kickstart dust production with a simple, low-tech grinder.

5) Crystal Pulverizer
Higher throughput crushing with automation-friendly IO and upgrades.

6) Crystal Growth Chamber
Grow stacks of seeds in parallel—built for scaling and speed upgrades.

7) Crystal Aggregator
A central machine for key recipes and high-efficiency seed scaling.

8) Circuit Etcher
Simplifies processor crafting by consolidating steps into a dedicated machine.

9) Meteorite Pattern Provider
Processes crafting patterns internally and provides 63 pattern slots for large-scale automation.

10) Resonating Pattern System
Assign per-ingredient destinations/sides for advanced routing and complex factories.

11) Ender Broadcaster
A wireless channel system that centralizes channel management and allocates channels on demand.

12) Ender Emitter
Automatically links nearby ME devices to your network for cleaner wiring and reduced cabling.

Other Info
Optional Mod Integrations
Some purified crystal recipes are only added when the corresponding mod is installed.
Supported integrations include:
- ExtendedAE – Purified Entro Crystal
- AdvancedAE – Purified Quantum Crystal
- Applied Fluix – Purified Redstone Crystal
- Applied Generators – Purified Ember Crystal
- Create – Purified Rose Quartz
- Mekanism – Purified Irradiated Crystal
JEI / EMI Support
Full integration with JEI and EMI is provided.
Dark Mode Resource Pack
Prefer a darker look? Try the dark-mode resource pack:
In-Game Guide
The mod includes a complete and detailed in-game guide powered by GuideME, covering all systems, machines, crystals.
No external wiki is required to get started.
License
This project uses a multi-license structure:
- Code: LGPL-3.0-or-later
- Assets (textures, models): CC BY-NC-SA 3.0
See LICENSE for full details.
Project description from CurseForge.
Pick your setup
AE2 Crystal Science by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.1.2
1 loader build1.21.1
1 loader build1.21
1 loader build1.20.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
AE2 Crystal Science versions and loaders
AE2 Crystal Science 1.21.1-1.2.1
ae2cs-1.21.1-1.2.1.jar
24 Jul 2026
AE2 Crystal Science 1.21.1-1.2.0
ae2cs-1.21.1-1.2.0.jar
19 Jul 2026
AE2 Crystal Science 1.20.1-1.2.0
ae2cs-1.20.1-1.2.0.jar
26 Jun 2026
ae2cs-26.1.2-neoforge-1.1.12
ae2cs-26.1.2-neoforge-1.1.12.jar
23 May 2026
ae2cs-1.20.1-forge-1.1.4.515.jar
19 May 2026
AE2 Crystal Science 1.1.12 for 1.21.1 neoforge
ae2cs-1.21.1-neoforge-1.1.12.jar
19 May 2026
AE2 Crystal Science 1.1.11 for 1.21.1 neoforge
ae2cs-1.21.1-neoforge-1.1.11.jar
15 May 2026
AE2 Crystal Science 1.1.9 for 1.21.1 neoforge
ae2cs-1.21.1-neoforge-1.1.9.jar
10 May 2026
AE2 Crystal Science 1.1.8 for 1.21.1 neoforge
ae2cs-1.21.1-neoforge-1.1.8.jar
4 May 2026
AE2 Crystal Science 1.1.7 for 1.21.1 neoforge
ae2cs-1.21.1-neoforge-1.1.7.jar
4 May 2026
AE2 Crystal Science 1.1.6 for 1.21.1 neoforge
ae2cs-1.21.1-neoforge-1.1.6.jar
2 May 2026
AE2 Crystal Science 1.1.5 for 1.21.1 neoforge
ae2cs-1.21.1-neoforge-1.1.5.jar
3 Apr 2026
Looking for an older file? The official CurseForge project page is in Resources.