The problem with jewellery and travel is not theft. It is that a highly polished object in a soft bag acquires scratches at the same rate as a key, and the person who packed it did not think of the key.
What actually travels
One band, one chain, one pair. Everything else stays, which turns out to be the correct decision for reasons that have nothing to do with security. A smaller case can be carried rather than checked, and a checked case is where objects go missing.
On returning, everything is inspected at the bench before it is worn again. This is habit rather than policy, and it is the reason the house's own pieces are in better condition than anyone else's.
