Originally Posted by
Leftovers
In the first place, this is just sprucing up fanon with the alien common sense angle, but since Shirou could pull off the Jeweled Sword even though it's alien to the point that it gives him an aneurysm just thinking about it, that won't fly.
Well, to entertain the thought, in Tsuki no Sango the elements mentioned also exist on Earth. Trees made of limestone, waifu made of silicon, ice in the atmosphere, etc. If we follow a train of thought that says human presence/common sense 'tinges' the elements or whatever, then that would also be the case for meteoric iron and whatnot that finds its way to the Earth and gets shaped by human hands, so nothing changes irw weapons that Shirou would try to replicate.