Hi,
that is just awful - you must be sick with disappointment.
Unfortunately if you dont have insurance, there's little chance of getting any recompense.
On your house insurance - are you SURE your ring isnt included. I.e. do you HAVE to state the ring separately? Maybe there is a clause that items over xxxE need to be stated separately, so could you at least claim the xxxE towards the cost of the ring?
Can you at least claim the cost of phones, wallet, cash, replacement passports and keys etc, off your insurance?
It does sound VERY dodgy that the hotel was immediately prepared to give you 1000E, without a formal claim from you. Normally hotels would have cover absolving themselves from items kept in the safe.
But since its a foreign country, it would be very difficult to have pursued a claim of liability against the hotel.
Its no help, but maybe try to console yourself with the thought that these are only material things, and how much worse it would be if you or just fiance had had an accident.
(Last year I lost a suitcase with a few thousand euro worth of possessions inside. I was devastated, but managed to get over it by remembering they were just material possessions (but, in your case the engagement ring is more significant) ).
Best of luck with what happens..