What is Crystal: sapphire, mineral, acrylic?
The glass over the dial.
Short answer
'Sapphire-coated' is not sapphire crystal.
Crystal: sapphire, mineral, acrylic when buying a wristwatch (quartz & automatic)
The glass over the dial.
Why it matters: Sapphire stays clear for decades; mineral scratches in months of desk use.
Look for: 'Sapphire-coated' is not sapphire crystal.
Full Wristwatch (Quartz & Automatic) buying guide