I like rummaging up enough iron stones for a large anvil and a complete set of tools but it sucks having to go find a silver or gold vein to craft a pendulum. what I propose. a 1 in 50 chance to find a gold / silver / copper / tin / zinc / lead rocks instead of iron rocks. a 1 in 100 chance to find a slate or marble shards instead of rock shards. a 1 in 1000 chance to find a low ql gem / salt / flint / source crystal. optional a 1 in 100,000 chance to get a tiny piece of seryll, adimantine or glimmersteel.