Update!
I finally bought Cartier plain platinum band. It's 2.5 mm wide. My DH got 3.5 mm. His fingers are very small (or my fingers are big?) His ring size is just one size bigger than me.
Update!
I finally bought Cartier plain platinum band. It's 2.5 mm wide. My DH got 3.5 mm. His fingers are very small (or my fingers are big?) His ring size is just one size bigger than me.