Inner dimension is 2.00". This is one of those pieces of glass where I imagine Kevin completed it, checked it out, then sat back and said "Yep, NAILED IT!!!" Oh man, it is SO perfect in every way, the anemone are so alive in this one, seeming to shoot up out of the glass! It's incredible to check out in hand, and one of the nicest bracelets I've seen for sure. I'm no expert in the sizing of these bracelets, but I would judge this one to be in the small range. It's in brand new condition, never worn. Signed with sig chip 'KO 2003'.