Weird part is, they said the ring was marital property, so I'm not exactly sure how I could steal it.
Count yourself lucky. My ex didn't want a fancy ring when we got married, so we had an artist make a custom setting with her grandmother's diamond in it. The diamond was small and not worth a lot but had sentimental value. Fast forward to a couple years before BD my ex decided she wanted a really nice ring. We shopped around and got her one that was over 7k, completely paid for by yours truly. She quit wearing it after BD so I tucked it away. After we separated she asked for it back. I can't remember who I talked to or what I read, but I was under the impression it was her property since it was a "gift" to her and I gave it back to her. Have never seen it since or gotten 1 cent for it. I later found out it's considered marital property and should have been part of the splitting of assets. Crap!
Your W continues to blow my mind. You must have the patience of a saint to put up with all that craziness!