A rock separator for separating rocks from soil, where the rock separator includes a mounting plate a plurality of elongate tines secured to the mounting plate, where the plurality of elongate tines define a curved shape across the mounting plate, a plurality of support members laterally joining the plurality of elongate tines and an attachment bracket on the mounting plate for releasably mounting to a machine. The mounting plate has a first major surface and a second major surface opposite the first major surface. The attachment bracket is attached directly to the mounting plate, where the plurality of elongate tines do not move relative the attachment bracket.