It’s a lesson many companies learn, though not many as publicly as GT Advanced. The now-defunct Sapphire glass supplier to Apple went belly-up recently, taking hopes of a Sapphire glass-laden iPhone with them. Apple’s idea was to have Sapphire glass production scale to meet their admittedly high demands. GT was willing to meet the challenge, but a new report suggests the entire partnership was doomed from the start. Given the evidence found, hindsight might make you feel silly you ever thought your iPhone 6 would have Sapphire beyond Touch ID.