As Corning unveils its latest Gorilla Glass, we ask: What happened to sapphire mobe screens?

He who controls supplies controls... eh, not much

Four years ago at the height of smartwatch hype, it was the most desirable mineral in the world. The tech superpowers jostled to obtain supplies of the material, just as the superpowers jostled to secure their nitrate supplies* ahead of the First World War."