We selected Palladium for the metal for my e-ring. I''ve been reading on pricescope that Palladium 950 is hard to work with, and that ruthenium is a hard alloy to cast. Should I be worried about my ring? We could still do platinum or white gold, but platinum is 3 times more expensive than palladium. I''m just worried about the craftsmanship. Is this a valid concern?