Given what I do for a living, my watch takes a heckuva beating.
Needless to say, my work watch tends to the less expensive side
Currently it's a Casio MDV-102, and I replaced the resin band with stainless steel.
It holds up.
That said, Sapphire is far less scratch prone than mineral (glass) crystal. But it will shatter. Sapphire (whether natural or synthetic) is one of the hardest substances on earth. It measures 9 on the Mohs scale, which is a system for rating the relative hardness of various materials. (Diamond measures 10, the highest rating.) Watch crystals made of synthetic sapphire are often marketed as "scratch resistant", meaning they are very difficult - but not impossible - to scratch. Diamond can scratch them; so can man-made materials that incorporate silicon carbide, with, with a Mohs rating of between 9 and 10, is, like diamond, harder than sapphire. These materials are sometimes used to make simulated-stone surfaces for furniture or walls, and accidentally scraping a sapphire crystal against such a surface could cause a scratch. Sapphire crystals cost upwards of $150 for just the crystal itself.
Here's a pic of my watch, and again, mine has a stainless band. (mineral glass crystal, BTW)
General rules of EMS - excerpts
- In any given Code Blue, check your own pulse first. If you've got one, it's not your emergency.
- 9-1-1 = "you call, we haul"
- It can be fun to yell "Game on!" when pushing the Narcan ... [SIZE="1"](thanks Doc Mottern!)[/SIZE]