Gorilla Glass 5 should be in widespread production by the time this is posted that has superior qualities, but it’s still interesting to note the production and use of Sapphire in our technology.
“Once valued only as a gemstone, sapphire is now an engineered material with a wide variety of industrial uses. These two article have concentrated on its use in mobile devices for everything from camera lens covers to touch sensors and touch screens to the starting material on which most of the solid state lights produced are made. Cost of the material continues to be a limiting factor in its widespread adoption for certain industries. However, as the technology for producing sapphire matures material costs are decreasing and in some ways sapphire substrates have become a commodity rather than a rarity.”