Hardware Reference
In-Depth Information
Sapphire Screen
Sapphire is the second-hardest transparent material after diamond, which makes it the
perfect substance to cover the faces of Apple Watch and Apple Watch Edition. A single
crystal of sapphire is used to make the display, and it's cut with a diamond-encrusted wire
to ensure a precise fit for the case. Afterwards, diamond-covered pellets are used to polish
and finish the screen, making for a beautiful reflective surface.
