So, I just found out an interesting use for all the ruby and sapphire I had lying around (and chances are, you have too): convert them into diamonds. I don't know if someone mentioned that already, but if you craft a pale gem from Essential Craft 3 (not too hard to make), put it in a storage drawer and lock it (or any other kind of ore dictionary conversion, e.g. Mekanism?), then simply pump in all the sapphire and ruby. From there you can convert them in a similar fashion to either diamonds or emeralds, because the pale gem have the same ore dictionary entry... A little cheaty, but who cares. I now need to go back and set my miner to include those two ores again ...