Just a few months after unveiling Gorilla Glass 4, its toughest glass yet, Corning has teased that it’s got an even more durable product in the works. 

James Clapping, president of Corning Glass Technologies, has revealed that his company is currently working on a new product called Project Phire. The goal of Project Phire is to create product that combines the drop durability of Gorilla Glass 4 with scratch resistance that “approaches” sapphire.

Clappin explains that while sapphire is good at resisting scratches, it doesn’t do quite as well at standing up to drops. If Corning is able to combine the scratch resistance of sapphire with the drop protection of Gorilla Glass 4, though, it could try to become more widely used in heavy-duty phones and smartwatches.

There has been a lot of hype around sapphire displays lately, perhaps most notably when the rumor mill suggested that Apple was going to use sapphire on the screen of the iPhone 6. That ultimately didn’t happen, with Apple going with Gorilla Glass instead. That said, all of the rumblings about sapphire that we’ve heard about recently may be kickstarting Corning’s efforts to improve the scratch resistance of Gorilla Glass in order to keep up its dominance in mobile.