Apple unveiled the latest iteration of its tech products this week, debuting the new iPhone 7 and Series 2 Watches.
According to Patently Apple, Apple has filed a new(ish) patent for a ceramic component casting method to manufacture harder zirconia ceramics.
The gold in Apple’s watch is far from pure: The alloy is actually one-quarter ceramic reinforcement that makes the gold “twice as hard,” more scratch resistant, and less dense.