no no don't use brasso! stuff called displex on ebay works like magic though
they have 2 different products. regular and one for touch screens (touch screen is in a yellow tube)Brasso seems a bit rough for gorilla glass, I would think. You need a very fine grit, like a very fine auto paint polish, not a metal polish.
edit: evidently there's a few diff types of Displex if you decide to use that. make sure you get the right kind for the touchscreen. I'd still be a bit wary of it.
Displex Touch Screen Polish
they have 2 different products. regular and one for touch screens (touch screen is in a yellow tube)
Dude, the same thing happened on my Lumia 920:Hi Ben. It is annoying. I have the identical situation. Was struggling to lift my phone from off my desk, and so slid it face down to the edge of the desk. Now there is a noticeable scratch across the screen. Must have been something small on the desk. But I thought this was Gorilla Glass 2! Not supposed to happen, especially given all the hoopla about how tough and scratch-resistant this is supposed to be.
Will try the Brasso trick, though.