
CrystalBlocks
Java mod listed for Minecraft 1.12. Downloads from the MC Java Mods app on Android.
Adds 7 decorative building block families in 6 colors each — crystal, brick, marble, and more — with matching slabs, stairs, fences, and walls.
⬇ Download on Modrinth
Crystal Blocks
Vanilla building block sets don't leave much room for texture variety once you've used up stone, brick, and quartz. This mod adds 7 more block families, each in 6 colors, so you've got somewhere to go once you've built the same three houses out of the same three materials.
Available for 1.20.1, 1.12.2, and 1.7.10. No mechanics, no gimmicks, just blocks.
Families
| Family | Look | Crafted from |
|---|---|---|
| Crystal | glowing diagonal vein in stone | stone + dye |
| Speckle | scattered mineral flecks | cobblestone + dye |
| Brick | offset masonry, proper mortar lines | bricks + dye |
| Corroded | blotchy rust patches | iron nugget + dye* |
| Mossy | patchy organic overlay | mossy cobblestone + dye |
| Marble | flowing curved vein | quartz block + dye |
| Hexplate | honeycomb plating | iron ingot + dye |
*Corroded uses redstone instead on 1.7.10 - iron nugget didn't exist as a craftable item until 1.8, so that version subs in redstone instead. 1.20.1 and 1.12.2 both use the real iron nugget recipe.
Each family comes in cyan, red, green, purple, orange, and blue. Each color gets the full building set: block, slab, stairs, fence, fence gate, wall.
Glow variants
Every family also has one glowing block, crafted with glowstone dust instead of dye, full light level. Glow variants get block, slab, and stairs — no fence/gate/wall. Nobody's building a glowing fence line, so that set stayed out on purpose.
Details that matter
On 1.20.1, slabs waterlog properly - place one in water and it holds like a vanilla slab. Fences, gates, and walls waterlog too, though that's their vanilla base classes doing the work, not something built for this mod specifically. Waterlogging is a 1.13+ feature, so neither the 1.12.2 nor the 1.7.10 download includes it - not a bug, just doesn't exist at those versions.
Everything drops itself when broken. All blocks live in their own creative tab instead of getting buried in vanilla's building blocks tab.
The screenshot is just an example of how it looks — there's too many blocks to screenshot all of them here.
Requirements
Forge. Pick the file matching your Minecraft version: 1.20.1, 1.12.2, or 1.7.10.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.12.2
- 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 Modrinth — 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.
- Ships as crystalblocks-1.12.2-1.0.0.jar — drop this file into the mods folder
- Download size: 530 KB
- Download link checked 9 Oct 2026 — working
These come from our own check of the pack file, not from the source page.