UPDATE!!
In case you're wondering on my progress, I took the bracelet to the local Tiffany store a couple of weeks ago. After talking with the sales rep, giving them some names that could've been the purchaser, they were able to verify the purchase even without a receipt. I was then authorized for store credit. Good, but not great. Next I mentioned that I wanted to gift this store credit to my sister back East, and was able to sweet talk the rep into getting the store credit in gift card form. I sold the gift card online and recieved $901 (!) yesterday. This is pretty much the best possible outcome. I used that money to purchase some sweet sweet VTSAX today.
Thanks everyone for all your help. I'm still working on getting rid of the Dom, but I think I can offload that on Craigslist. If not, then I'll go through the KL wine buyer above. Although a number of you mentioned you'd drink it, so maybe if you're in the Silicon Valley area and want a really nice bottle of Dom for $100, hit me up. ;)