We got engaged 16 years ago and DH went to Tiffany and bought an amazing ring for me. Two sapphires and a diamond. Suffice to say it was not an inexpensive purchase.
Fast forward 15 years three DC and a very busy life later, one of the sapphires fell out. I took it back to the shop to get them to repair it for me.
They claim that I will need a new stone and that it will cost nearly half the initial cost of the ring to repair it. 
AIBU to expect them to put in the stone that my DH has already paid for?
AIBU to expect a ring from Tiffany to last 15 years??