Earlier this week we got a look at what appeared to be the unbreakable sapphire glass cover Apple is expected to use for its iPhone 6. Now one expert in the material is stepping forward to confirm the rumors, claiming Apple consulted him about using a sapphire display over a year ago.

Speaking to The Guardian, Professor Neil Alford says he was one of multiple materials experts to meet with Apple last year to discuss the use of sapphire glass for a future iPhone. After watching a recent video showing the leaked front panel in action, Alford said it “could well be” the real thing. He added that the decision to use sapphire is “quite cunning,” noting that it’s the third hardest mineral known to man.

There are some drawbacks to using sapphire glass, mainly related to the production process. The material is expensive to produce and can only be cut up using diamond slicers. Apple recently started producing its own sapphire at a facility in Arizona, and hopefully the company has figured out a way to keep costs down.

If the iPhone 6 does feature a sapphire glass display it could be near-impossible to scratch or crack, giving Apple a huge advantage over the competition. Alford also notes that the Cupertino company is likely to patent its sapphire manufacturing process, giving it a large window of time before other companies can catch up.

Latest And Best Prime Day Deals

Unlock voice control with Echo device deals and $5 Amazon smart plugs
Amazon Echo devices bundled with $5 smart plugs

Amazon's Smart Plug lets you start voice controlling anything plugged into it by asking an Alexa-compatible device, and today's deal lets you snag one for only $5 with purchase of select Echo devices.

Be more productive with a year of Office 365 Home and a free $50 Amazon gift card
Office 365 Home 12-month subscription and $50 Amazon gift card
$99.99 $150.00 Save $50

The subscription works with up to six people, but that card can be all yours.

Amazon's Fire TV Cube is down to just $70 thanks to this Prime Day deal
Amazon Fire TV Cube
$69.99 $119.99 Save $50

Grab TCL's 32-inch 720p Roku TV for less than $100 in this Prime Day Lightning deal
TCL 32S325 32-inch 720p Roku TV
$99.99 $130.00 Save $30

Act fast while you can. These Lightning deals tend to sell out quick.

The Ring Alarm security system is reaching new low prices for Prime Day
Ring Alarm home security systems

Various configurations of the Ring Alarm are discounted to their best prices yet exclusively for Prime members at Amazon through Tuesday night to help keep your home secure.

The Sonos Beam Prime Day deal includes a $40 discount and 2 $50 Amazon gift cards
The Sonos Beam Prime Day deal includes a $40 discount and $100 in Amazon gift cards
$359.00 $499.00 Save $140

That's just so much savings in one deal. You'll have to wait for the physical gift cards, but that's basically $100 to spend however you want.

Prime Day dropped this PlayStation 4 console bundle to just $250
PlayStation 4 Slim 1TB console with Marvel's Spider-Man and Horizon Zero Dawn
$249.99 $359.98 Save $110

This deal on the PlayStation 4 Slim console saves you $50 off its regular price while also including Marvel's Spider-Man and Horizon Zero Dawn Complete Edition for free. You'll just need an Amazon Prime membership to snag it.

The newest device in the Echo family, the Show 5, is now down to just $50
Echo Show 5
$49.99 $89.99 Save $40

It's only been on the market since May, but it hasn't escaped the Prime Day price cuts.

More Prime Day Deals