V1.1 is a release file of the Minecraft mod gems of the caves for Forge, made for Minecraft 1.15.2. It was published on June 12, 2020 and is 0.3 MB in size. For the full description, screenshots and every other version, visit the gems of the caves mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.