We wanted to appeal to a wide range of personal styles, so with Apple Watch Edition, we're working with a uniquely luxurious metal: 18-karat solid gold. We are using both yellow and rose gold. Each is a custom alloy designed to be not only beautiful, but up to twice as hard as standard gold. It begins at the molecular level where precise adjustments in the amount of Silver, Copper and palladium in the alley result in very specific hues: have yellow and rose gold. Next, we use a new hardening process developed by our metallurgists to strengthen a metal that is naturally very soft. The molten gold is cast, not into the shape of the watch but into solid ingots. These ingots are then precisely milled, then precisely milled to remove any imperfections. They've then compressed to a fraction of their original size creating dense pore-free billets.
