Item missing from inventory.

Hi there please can you help me locate an item. I bought an Atziris Rule staff from the market place and put it in my stash uniques for when I had leveled my alt for the build I want to try. It had a unique corruption, now it's nowhere to be found.
Can you look into my account and see where it's gone please? I had an exciting weekend planned and I don't have the currency or time to farm the currency for another.