NoGildedBlackstone
NoGildedBlackstone is a small Spigot plugin, with which you can remove the gilded blackstone block from structures. It thereby only affects new generated chunks and only gilded blackstone which generated from structures (which is the only way gilded blackstone generated in vanilla). The plugin gives you the option to select which structures should be checked (Can be vanilla or data pack structures) and with a deny-list / allow-list also which worlds it should affect.

Installation

1. Download the jar from here
2. Make sure your server is stopped
3. Place id in the plugins directory of your server
4. Start the server and stop it again
5. A config.yml file will be created in the directory plugins/NoGildedBlackstone
6. Configurat the plugin based on your needs, the settings are described in the config.yml
7. Save the file and start your server again
8. The plugin will now prevent gilded blackstone from generating

Pictures