the_mod_1.21.4_neoforge is a release file of the Minecraft mod The Diamondness for NeoForge, made for Minecraft 1.21.4. It was published on January 20, 2026 and is 17.9 MB in size. For the full description, screenshots and every other version, visit the The Diamondness mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
