US guides
You are buying a few tenths of a millimeter and a different number on the report.
If guests in the US cannot tell, the smaller stone with the better grade is the rational buy. If you want the certificate to say 1.00, pay it knowingly.
Lab-grown gaps are usually smaller. Check your origin before you apply a natural-diamond rule of thumb.
Put both weights on one screen and compare USD price, cut, and millimeters. 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.
