Glass ranks around 5.5 to 7 Mohs, but sapphire crystal has a hardness of 9 Mohs, making it only slightly less hard than diamond. Chief among the differences touted for Gorilla Glass 3 over As seen in the video below (warning Flash content), Gorilla Glass comes out on top over sapphire in a stress test: Mentioned 40 times in the report, manufactured sapphire was obviously Corning's Corning® Gorilla® Glass DX Power Glass™ Sapphire Solar: Corning® Gorilla® Glass DX Power Glass™ Sapphire Crystal: Physical size: 42 x 42 x 14.1 mm 47 x 47 x 14.5 mm 51 x 51 x 14.9 mm: 42 x 42 x 14.2 mm 47 x 47 x 15.1 mm 51 x 51 x 14.9 mm: Display resolution: 240 x 240 pixels (42-mm diameter) 260 x 260 pixels (47-mm diameter) 280 x 280 I recently ordered an Apple Watch Series 7 aluminium model (midnight, 41mm cellular). It's going to ship in a weeks time. However I have been contemplating about the scratch resistance of the Ion-X glass used in aluminium models. From what I understand, sapphire crystal (used in steel models) is better for scratch protection but Ion-X is better “Since a base-model Apple Watch is a $200 premium over a base-model Apple Watch Sport, we wondered just how much tougher the sapphire crystal is than the Ion-X glass.” “The sapphire crystal zdj said: Can't say much about visibility, but sapphire is the second hardest material (after diamond) and the fact that it’s very hard to scratch means that it’s much less likely to break than Gorilla…. Glass definitely has better contrast and less reflections than sapphire. Black looks blacker. White looks whiter. Corning Gorilla Glass and the Power Glass lens are designed to be scratch resistant, but they are not as durable as the sapphire crystal lens*. The sapphire crystal lens is incredibly durable and is the third hardest mineral, right behind diamond. As a result, the lens is much harder to scratch than glass." But this does not say, if Gorilla and Seeking answers, the repair experts over at uBreakiFix have taken a piece of Gorilla Glass and a piece of Sapphire Glass through a series of torture tests to see which resists damage better. And .

gorilla glass 3 vs sapphire crystal