Possible Clues:

• Get rain (anag) — rock
• Reacting badly, with no end of volcanic rock
• Hard old lady with Italian sweetheart
• Circling end of pier, fancy eating rock
• Stone hurtled into holiday cottage
• Stone from Northern Ireland in jar
• Stone from Ulster incorporated into fireplace
• Stone from a ring, replaced before the centre's fallen out
• In change of gear, metal switched for stone
• Kind of rock for which New Hampshire is known