What's the best way to use non native gems ?

[Nagot Gick Fel]

Boron said:
But since your main income will be astral pearls from clams it is not as scarce as the other gems .

I think that's the important bit: you say a resource is 'important' when it's 'scarce' (which I find odd), while I define its importance after its final use (ie, if I use water gems to make clams to make pearls to make something, for me it's the 'something' that's important).