Do you have access to a 10x loupe? Have you looked at the line with it? Iím pretty sure it is a scratch if they tell you it is but it doesnít hurt to get a second opinion. I thought it would be a material deposit on the bezel from rubbing against something, probably metal. Although polished ceramic is really not prone to this. It happens more in bezels like the one on the 8500 Planet Ocean which are matte. Is there any chance you rubbed against a engagement ring?