Rare earth elements are plentiful and are crucial to the way we live now. For refining purposes, they need to find areas with high "rare element" concentrate so it doesn't cost a mint to dig up etc. These places are quite hard to find. China is known to have vast areas with high concentrate and are leading in "rare element" refining.
My question is which element is most important to us?
Gadolinium?
Which is the best element to by from RWMM mint in terms of most used in society today? I see they don't sell Gadolinium in ounce form...