My girlfriend and I, who live in England, are going on holiday to US on 15th September. I've purchased an engagement ring in the UK (over £1000 in value) and want to propose on holiday. I will be travelling with the engagement ring in my carry-on, and have a receipt of purchase. I do not, however, have any insurance appraisal document, as it is not going to come on time before I leave.
Is there any other documents I need to bring or procedures I need to follow to prove this ring was bought in and will be returning with us to the UK after the holiday? Do I need to declare it somehow before entering the US? Is there a possibility I will be made to pay duty on it or have it confiscated to a hold? Thanks for any help.