I really like the idea of the plugin, there are a lot of possibilities for customization to suit yourself and your needs, at the moment, I think there are no bugs, and even if they appear, this plugin deserves the wait for them to be fixed, I recommend it, thank you, @DAez.

The plugin is great and interesting to players, I like everything, a lot of gems. It adds variety to an endless farm of resources.

The idea for the plugin is very good, but unfortunately the plugin is not working correctly. There is no ability to add your own precious ores as described in the plugin. There is no support from the developer either, I’ve been waiting for a month for a response from him to help with the plugin and fix errors that were discovered during operation. Plugin 3/5.

Creator is not fixing this script and it currently is about 50% broken. Placing some custom items in a furnace deletes them from your inventory. Don't waste your money.

Still not fixed as of 9.4.2023

Sometimes a part of me wants not to tell others how good things are because I feel like it will make my server more unique.  But I just feel that if you are a PVE or an RP server and you do not have this plugin you are missing out big time. This plugin has allowed us to add an entirely new role to our server. Just take a look at the description of the plugin what it actually does. What we have done is added a Gemcutter role to our server a player who other can take the gems to to be processed for a cut of the materials. but there is so much possibility you could have players turn in gems for scrap at a machine or NPC or anything.

The plugin overall is great, me personally I enjoy the overall variety of gems/stones available on top of its highly configurable state. You are able to do quite a lot with this plugin, I highly recommend it to anyone seeking a more enjoyable experience when going on long mining trips.