The first thing I will tell for information is two famous examples of two near-supernatural metals that were documented in years before in the RP's of the past. These two are True Silver (Argentril) and True Gold (Primasium) 

Argentril (True Silver): Argentril, aka True Silver, is an unbelievably durable metal that only can be bound and put together by higher civilizations (Atleast technological or magically inclined enough to make magnetic monopoles to bind the necessary components to make Argentril useable as armor, weapons, ships, or megastructures). It is said to be the strongest material in existence.

Primasium (True Gold): Primasium, aka True Gold, is another ultra-durable metal that can only be bound and put together by higher civilizations. This material is not as strong as Argentril, but unlike that metal it can be used an advanced energy source if the civilization is advanced enough. Using this metal as an energy source can make the ability to use super-powerful weapons, such as Hellbore weaponry, Slicer beams or essence-based weaponry.