Fenix 6x sapphire glass scratches

Did anyone try to make a warranty claim? I just found another scratch...

I trying, sent them the watch photos and wait for their feedback. 

Same experience here. I have the watch since late August and I have spotted ugly scratch recently. Previously I had Fenix 5 Plus Sapphire for 1,5 year and the glass was pristine for all that time.

I've had several I've had F3, F5 and now F6 watches, and ForeRunner watches.  The Fenix ones with sapphire didn't get any scratches, and the Forerunner watches did.  I certainly expect the sapphire versions to be more scratch-resistant than non-sapphire.

My experience is the same as yours in the past.  Banged sapphire versions on various things without scratches.  My F6x is still scratch-free, but I haven't hit it against anything that I've noticed.

Okay, I'll be "that guy."

"Sapphire" glass isn't all created equal. It wouldn't surprise me if a $10,000 Rolex Submariner had much more resilient sapphire glass than a smartwatch.

Even assuming the sapphire glass on a Garmin watch is just as strong as that of a Rolex:

• the Garmin screen is a much larger target for impact
• a sport watch is likely used in much more rough environments than a Rolex (gym, hiking, rock-climbing, paddleboard, whatever)
• there are a lot of environmental contaminants hard enough to scratch sapphire crystal - silicon carbide is damned common, can be kicked up by construction dust and will stick to your clothes - so statements like "only diamond scratches sapphire" is wishful thinking
• though more scratch-resistant, sapphire is much more brittle and shatter prone. This is well documented.

Putting a rubberized, self-healing screen-protector on your sport-watch will protect from scratches and reduce the chance of a point-load (dropped on a rock, bumped a corner) shattering the glass.

I've seen IQ Shield LiQuid Shields on half a dozen Garmin watches - when applied correctly, you can't tell they're installed unless you know what you're looking for.

I wouldn't use a glass screen protector. Yes, they add scratch resistance but a point load will be telegraphed directly to the watch-face. I'd argue that any load strong enough to shatter a glass screen protector would stand a good chance of damaging the underlying screen. A rubber protector has enough give to offer some impact protection.

https://gizmodo.com/whats-sapphire-glass-and-why-would-apple-want-it-in-yo-1603457905

Sapphire vs. Gorilla

Harder than Gorilla Glass, stronger than steel, and perfectly transparent? That all sounds like very compelling evidence to slather the screen of your phone in sapphire glass right now. So why isn't it everywhere? It's expensive as hell.

The cost comes largely a result of the manufacturing process, which produces big block of sapphire, called a boule, which has to be sliced into thin sections using a diamond saw or laser(!). Corning estimates that it costs about ten times as much to manufacture as its Gorilla Glass, and while that's probably an aggressive estimate, even if it's five times that's still a big chunk of change.

It also weighs in at 67 percent heavier than Gorilla Glass—with a density of 3.98 grams/cm³ compared to the 2.54 g/cm³. That means that to match it gram-for-gram, a screen made of sapphire would need to be rather thinner. That's great for our pockets, but just because it's hard and strong doesn't mean that it's unbreakable, and making it thinner makes it more vulnerable. While the fracture toughness of sapphire is theoretically around four times greater than Gorilla Glass, tests by Corning—again, not an unbiased source—suggests that it could be more brittle when used at the same thickness as its screens. In other words, while sapphire glass may be more scratch-resistant, it's not necessarily any more shatter-resistant.