The granite mace is a weapon that requires level 55 Strength and Attack and acts as protection from Bandosian minions in the God Wars Dungeon. In an idle stance, the mace is held on the uppermost part of the handle, similar to a maul.
Before the Evolution of Combat, this weapon used to have access to the same special attack as the granite maul, delivering an extra attack instantly when used. When special attacks were re-added, Quick Smash was returned as the special attack of the granite maul, but the granite mace was not given the ability to use it.
Shortly before the Evolution of Combat, using the special attack of the granite mace to initiate combat with enemy produced a message stating that since the only function of the special attack was to strike quicker, using it as the first strike in battle produced no effects, and was essentially a waste of the special attack bar (paraphrased). A similar message occurred when a player used the granite maul to initiate combat.