I feel your pain.
We went on a camping trip for two weeks one summer, so I put all my good jewlry in a brown paper bag (you remember those don't you?), gave it to my sis to watch and when we came home my sis gave it back to me. I put it down on the kitchen table by the back door and... yep, DH took it out to the trash. To this day - 26 years later, he is unable to own up to it. It was over $2000. in jewelry I had been buying since I was 16. Lots of OOAK silver and turqouise. Oh well, some dump is well dressed.
Hope you find your bag. A lesson for us all here.