Hi aternos team
thanks for the clarification, I found that this mod is in curseforge.
Name: GemsPlusPlus
Link:https://minecraft.curseforge.c…=mc-mods&projectID=310914
Description: this mod adds new ores and crafting recipes that uses this news ores for create tools, weapons and armors.
(version 1.12.2)
Thanks for your time (again).