Last month I purchased some wonderful rings from pierrejewellery.com/ and should say my DW was very delighted. You see, she always preferred gifts that I have put some effort to make, not just some randomly bought online things. So I ordered by these guys and put it on our way to the bedroom. She simply loved it! Your order will be insured and you can track it by number; so, you should not worry that it will be lost or will not arrive in time. The courier will deliver it personally in hands.
Actually, let the seller know in advance you mean to have the jewel appraised immediately after purchase, and that you might be returning it for refund. That’ll help encourage them to be agreeable.