PlusOres

This is a simple mod that aims to add new/more ores, metals and gems to the game, actually adding:
2 Gems (Ruby and Sapphire) which are 60% complete (Ruby 100%, Sapphire 10%)
4 Metals (Copper, Tin, Steel and Bronze) which are 77,5% complete (Copper 100%, Tin 100%, Steel 100% and Bronze 10%)

Note¹: Not every metal/gem will have tools/armor.
Note²: There will be more gems and metals in the future. This mod is still in beta.