Replacing the display with a sapphire display

While it’s technically possible … I wouldn’t do it!

If you are thinking it’s harder to break, thats not the case! It’s really only harder to scratch!

The harder something is it becomes easier to fracture, think plexiglass vs plate glass. As it turns out Sapphire is not as transparent then glass, so the thicker it is the less light gets through. If you look at two Apple watches side by side you can tell which one has the Sapphire. And lastly, the cost is much higher for the part!