Feb 18, 2021 · How much is a ton of 57 rock? #57 Granite Gravel—52 per ton Typical construction, driveway, and drainage gravel. What is the cheapest stone to buy? Crushed concrete, sand and gravel mix, and crushed shells are the cheapest stones at 15 per yard. Crusher run, pea gravel, steel slag, and river rock typically cost 50 per yard or more.