Unique The Coming Calamity

Hello, ive just purchased The Coming calamity body armour ive equipped it and filled all 4 sockets for herald of ice, thunder and ash. Went to the tribe island in Act 4 to test it out and its vanished!! Went back town and still gone! Not in stash or guild stash. Poof Gone. No ive not accidentally dropped and destroyed it. It just disappeared