For the 18 karat gold Apple Watch Edition, Jony Ive told The Financial Times on Friday that Apple had created a process to place molecules in Apple gold closer together, consequently making it harder than standard gold.

But there’s more to it than that, with a metallurgist now explaining that Apple’s more densely packed gold atoms could reduce the amount of gold it needs to use per watch by a lot.

Jony Ive’s new interview with The Financial Times is packed with nerdy details on the Apple Watch and the designer’s life. Slipped in among the juicy design bits, Sir Jonathan also hints that Apple invented an entirely new form of gold just for the timepiece.

“The molecules in Apple gold are closer together, making it twice as hard as standard gold,” Ive says.

Wait. Gold is a metal. Does Apple’s design studio exist in another dimension?