US guides
This is not insurance advice. It is the paperwork the purchase already creates.
Photograph the loose diamond and the report number before a jeweler sets it. After setting, photograph the ring.
Keep those files with the inscription number. A future claim in the US goes faster when you are not describing “a round diamond” from memory.
None of this changes the diamond you should buy. It changes what you file the night it arrives. Carat Mate ships the certified loose diamond and its lab report to United States addresses. Prices on the site are in USD. Wrong-item returns may be considered within 3 days of delivery, subject to review.