More lost and stolen jewelry..we need your help

My wife and I recently returned from Phoenix and after a couple of days she realized her jewelry bag that she was traveling with was nowhere to be found. She believes the jewelry was in her bag up until we got to the rental car return. She had in the bag a vintage platinum and diamond necklace, platinum and diamond bracelet with heart shapes, 2 platinum rings(one with a floral pattern and the other here wedding band with filigree work on the sides) and several pearl necklaces not to mention some random costume jewerly. Does anyone know how best to track down lost/stolen jewelry? Any recommendations on who to call in Phoenix and or Dallas to track down such items? Commenter name: shawn