Skip to main content

Fix Your Stuff

Right to Repair


Announced September 9th, 2014, this device is Apple's first foray into smart wearables. iFixit's repair manuals are applicable to Apple Watch (steel) and Apple Watch Sport (aluminum).

188 Questions View all

What are the Sapphire and Gorilla Glass Weights?

How much do the respective Sapphire and Gorilla Glass displays weigh by themselves?

Answer this question I have this problem too

Is this a good question?

Score 0
Add a comment

1 Answer

Most Helpful Answer

I'm not sure you can do a direct comparison here from a weight perspective unless you had the two parts in hand and had a very fine scale to weight them.

Let say the size of the cover glass is the same for either. So one would need to look at other properties to figure out if there was a weight difference. The easiest way is to look at the Atomic Weight of the two. While one can find Sapphire, Gorilla Glass is not listed but we can compare it to Quartz. I suspect Gorilla Glass would be heaver as the molten alkaline potassium salt would impregnate into the voids. Lets say it would add 10 to the Molecular Weight.

So looking at the numbers:

  • Sapphire - Molecular Weight: 101.94
  • Crystal Quartz - Molecular Weight: 60.06

A difference of 41.88 (grams per mole) so its clear Sapphire is heaver if the objects were the exact same size in this example. Now adding the potassium salt it would only be about 32 (grams per mole) difference.

It's also possible Apple uses a thinner plate of Sapphire here given its costs and added strength. So the difference could end up being very little.

Was this answer helpful?

Score 1
Add a comment

Add your answer

Mac 128 will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 1

Past 30 Days: 3

All Time: 173