I've never heard what the brand name is, but it is fortified glass of some kind, but I don't think it's quite as good as Gorilla Glass. Prior to my GNex I've had 3 other smart phones, all with Gorilla Glass and none of them scratched and I didn't use a screen protector. I've only had this GNex about a month and have already developed a minor scratch. I'm thinking I may start using a protector but it'd be a shame to cover up this beautiful screen with anything that wasn't completely invisible.