DIAL COVER

THERE ARE THREE BASIC DIAL COVER TYPES USED FOR A WRISTWATCH:

synthetic sapphire

Possessing the same chemical composition as natural sapphire, this is the most expensive and hardest type, and widely used in Swiss watches.

Mineral

Mineral crystals are simply made of glass. Inexpensive but relatively easy to break. This

plexiglass

This is the most affordable kind but not as resistant to scratches. This material is also known as acrylite, and is technically considered a type of plastic.