Vertu COO Perry Oosting spoke this week on the company's past with Apple, noting how dealings with Sapphire Crystal Displays fell through. This British luxury phone company, Vertu, has itself created smartphones with just such displays working in a lovely manner - but for mass production, it seems, it just wasn't meant to be. According to this fellow Oosting, Apple's choice of Gorilla Glass 3 for future iPhones was a far more feasible choice.
This information comes from an interview with Tages Anzeiger where Oosting also spoke up on his vision for the future of smartphones. His vision is, obviously, that people should be working with "the opposite of mass production", using precious materials to create smartphones as means to "escape the technology arms race."
Obviously Apple doesn't necessarily agree with that aim entirely, the same being true of what was said by MacRumors to have been at least two Vertu employees moving from the former to Apple in the recent past.
Gorilla Glass 3 is coming up quick as the material-of-choice for many major smartphone and tablet brands here with such machines as the Samsung GALAXY S 4 picking up on the technology. Gorilla Glass has also appeared in many top-selling devices over the past several years, including such devices as the LG-made Google Nexus 4 and the iPhone 4.
Sapphire Crystal does exist in the cover for the iPhone 5's rear-facing camera, on the other hand, and has been suggested to exist in different bits and pieces of future phones. The iPhone 5S, for example, has also been tipped to incorporate Sapphire in its home button - strange as that may seem.