You might go to Princess's web site and the lost and found area and post there. I had purchased a luggage tag with a combination lock and cable ... when I got home no lock and cable - yesterday they called and said they were sending me one.
Suggest when you post that you tell them what cabin you were in. Good luck. I have those earrings, too - they're pretty nifty!
I cruise the Emerald Princess, Eastern Caribbean on April 16, 2012