The rock tumbler is a machine that you can insert a gem into, and after it processes it, you'll be returned that same gem with the next-highest quality level.

Think of it as a Cask for minerals! Insert a base-quality Emerald? After six hours, you'll get back a Silver-Quality Emerald. Put that Emerald back into the machine for another six hours, and you'll get a Gold-Quality Emerald. Put it back in for twelve hours, and you'll finally get an Iridium Quality Emerald! (The machine does not take iridium-quality input)

The recipe for crafting this machine is unlocked at Mining Level 5.

You can currently toss any of the following into the machine to increment their quality level, and thus, their value:

-Emerald
-Aquamarine
-Ruby
-Amethyst
-Topaz
-Jade
-Diamond
-Prismatic Shard

This mod is composed of both a PFM and a JSON Assets Content Pack, so both of those Mods are required. This mod has been tested and works with Automate if you have the needed PFMAutomate mod that bridges the two together.

Future Plans for the Mod:
-Allow all minerals to be processable to better support this as a miner's income support mod
-Make the processing time user-configurable through GMCM
-Other suggestions (please let me know if you have any!)

Special thank to Asterisk555, who did an amazing job on the art for the rock tumbler!