Whilst I was there, I said yes, Rolex uses glue to stick the Cyclops onto the sapphire crystal!
The Answer is older Plastic Crystal (before 1977) was made by compression molding method as one piece from a mold.
The one using Synthetic sapphire crystal is stuck on Cyclops Lens (size 5.5mm x 7.2mm) using Adhesive onto the crystal, as that is very expensive and tedious to made one solid sapphire crystal coming with the magnifying glass, that is pure cost concern.
The way to remove the Cyclops is simple using a gas lighter torch, heat directly on top of the Cyclops for 2 seconds, and then use a small sharp culler blade to remove it…
Refer to this video to see how easy it could be done!
HK Snob
