Artifact polearm of unspecified type The Ten-Foot Polearm. When wielded, it confers immunity to stoning from c corpses, artifact blasts, and special damage from bane artifacts that hate you, because “you don’t touch them with a ten-foot pole”.

Stone shield, a magical shield made of stone that provides stoning resistance, but is quite heavy.

Rock trolls are immune to stoning; not because they are made of rock, but because they already have an affinity with it.