Nick hunny, I realize that Jess now makes more money than you do now and I can understand asking for spousal support. However, to ask for jewelry back that you gave as a gift - tres tacky darlin'.
I know your mama taught you better than that, a gift is a gift. Jess is not asking you for the $50,000 watch back or the sports car she gave you. Lick your wounds, put your career back together and move on sugar. In short be a man about this split.