I'm sorry to hear that!
May I ask how do you insure your jewelry? Do you need receipts and pictures?
If you don't have receipts anymore,take your jewellery to a good jeweller who can appraise it for you,and make a detailed valuation certificate for you that encompasses a description and current value.Pics are also invaluable too..........in case it happens any of your items are never seen again,that some could be re-made for you if they cannot be sourced through the trade anymore.