Watch Crystals
When you are choosing a watch the watch crystal can be something that you might want to consider. The more experienced watch owner will probably be more interested in this feature. Most average people don't even think about it and indeed you don't really have much of a choice in the lower priced watches. The watch crystal is the face plate on the watch, what you actually see the time through. So now you know just in case you didn't before.
Most of the time the watch crystal is made out of sapphire. This is not the sapphire you are thinking of, it is a synthetic material which is extremely hard. Sometimes watch crystals can also be made out of mineral glass which is glass that has been specially coated to make it more scratch resistant. The very cheap watches use acrylic plastic and this is of a concern as it scratches very easily and it won't take long for your watch to look awful if you are not careful with it.
If watch crystals are something that you are concerned about then you might also want to consider that some watches have crystals that are coated to help lessen reflections. This is great if you are not too big on getting a glare off of your watch. Some watches that have a mechanical movement also have a crystal on the back so that you can see the movement. There are a lot of people who like this feature. Again, it all comes down to individual tastes and what you like.
posted by Watches Giant