CORNING GORILLA GLASS 3

Gorilla Glass 3 is not only chemically strengthened but its atomic configuration is formulated so that the glass is less brittle, and fundamentally tougher and more damage resistant even before chemical strengthening. 

Gorilla Glass 3 has three times the scratch protection over its predecessors as well as a 40 % reduction in visible scratches and a 50 % increase glass's retained strength after a flaw occurs.