Hide your precious items in a Book Safe
There is an old saying, robbers never steal books. It is mostly true, unless they are trying to steal a preserved holy bible. With that said, where is a good place to hide your precious items, a book safe. Hidden within other books only you know where it is located. The robber would have to go through all the books to find your stash.
Travel to another country knowing that if you are robbed, your precious items will be hidden in secret books.
Lucid Persona has a massive selection of Book safes, guns safes, lock boxes and vaults. Keep your small gems hidden, check them out.