Two (no more, no less) layers of graphene together can exceed the hardness and strength of diamond when stressed:
As I said, we now understand the elements of the periodic table fairly well. Now, the materials science door is opening into a whole new world of nano and micro-scale elemental structures.
Next? Products of reactions between nanostructures...?
We've come a long way in the last century. There's no telling where a culture with a few millennia of a head start might be in their knowledge and applications of materials...
This must be what Galadriel gave Frodo.
This must be what Galadriel gave Frodo.