Hi Tanya,
As long as you order this ring in any size between a J and Q then it is fully refundable.
The ring should be with you within 7 days of you placing the order but again that depends on what finger size you require. Refunds are normally made the same day as we receive the ring back although it can take 3 days for your bank to credit your cards.
We provide documents you need to give to an insurance company but we don't insure the ring. If you have home contents insurance then it is generally best to add your jewellery to that policy.