That's a platinum ring I found one it was marked plat the wife got a hold of it a a few others for a new water heater gotta love em sweet find Thanks for sharing it!!!!!!!!!@
Rough carat weight? That was probably a 3-4K ring, maybe more, can't tell how big/nice the diamonds are. Big name designer on inside could triple that value.
You just paid for a nice vacation in the caribbean. Enjoy it. Haha!