Hey, im using Range and bolts at the mole. Right now i use emerald and diamond bolts, both (e). This seems to work, but would ruby be better? Would rune bolts or dragonstone be worth it?

Use ruby bolt's then switch to diamond when the mole is at half health. The problem with emerald bolts is that if you're soloing and the mole dies of poison when you're not near it, you could not find it in time. And dragon bolts would be a waste of money.