Tiffany platinum wedding band size 7

Tiffany platinum “forever” (not for me) wedding band, used and worn for about four years so there are scuffs on it as pictured. It looks to be 3mm but I will take it to Tiffany and get it buffed up and properly sized. Size 7. And just cause it didn’t work out for me - plus it no longer fits - doesn’t mean there is any bad luck attached. Perfect understated and simple and elegant ring. Retails for 1850 currently Update - brought it to Tiffany’s to get polished and it is a size 7 and 3mm .. polished photos are the ones with the pouch under it