While the block of stone scrap idea makes intuitive sense, it lacks in game coherence of scrap being awful and useless unless melted or ground. Doing it as gravel also keeps the stone dust != sand artificial construct; the implication that dust isn’t as fine as sand is why I personally support Gravel == block of raw stone (ore) [but that’d be horrifying on the multiplicity], since there is also no block of crushed ore.
Maybe Steve is secretly an Ork? Infinite teef is literally why the gold-tooth clan is richest, iirc, lol.