The hardness is comparable to the fourth generation of Diamond glass, and the scratch resistance is close to sapphire.

While the main supplier of the mobile screen, Corning's top brass, has blasted sapphire glass for its expensive, heavy, and environmentally friendly but when it comes to releasing its latest glass research project Phire, it is not always easy to compare with the latter's scratch resistance, saying the new product in research and development will have the ability to resist the fall of the fourth generation of Diamond Glass, It is also close to sapphire in terms of scratch resistance.

Sapphire is a highly-hardened transparent crystalline alumina (bauxite), with a melting point of up to 2030 degrees, with an excellent scratch resistance and almost completely impervious and anti-corrosion. In short, this is a rich, inexpensive version of the diamond, in addition to a slightly weaker capacity. Its resistance to scratches is 10 times times that of ordinary glass, much tougher than any other optical application. Given the high quality of sapphire, many people thought Apple's next-generation phone would use a sapphire screen before Apple released the iphone 6. But the final facts have surprised many, and Apple still chooses its old partner, Corning, and the maker of the "expensive, heavy, green" sapphire, advanced, has to file for bankruptcy because of the loss of a large single.

However, despite the emphasis on the shortcomings of sapphire, in fact, Corning is very clear that Apple's favor of sapphire, so its improvement in its own glass is not because of a lack of a competitor to slow down. At the end of November last year, Corning launched the fourth generation of Glass, the company said after a full drop test, has identified the main reasons for the broken screen and improved. The improved diamond Glass has a strength of twice times higher than the competitive product, and can reduce the drop rate to 20% on the rough surface. This Corning claims to be a step further, Project Phire will not only have the fourth generation of Diamond Glass, but also in the scratch resistance will be close to sapphire.

If so, the new product will be a great way to solidify Corning's dominance, because the weakness of the sapphire is that it is not resistant to falling, and the diamond glass is not resistant to scraping, and project Phire seems to achieve the complementary advantages of both sides. But the product was not known, and Corning said the new product would be released later this year.