US guides
That popularity is also why rounds cost more than ovals at the same grades.
US buyers should not shop a round without an Excellent or Ideal cut filter. A cheap round is often a weak cut.
Symmetry and polish should be Excellent or Very Good. Then spend what is left on color and clarity.
Open the round diamond page and keep the carat band tight so you are not mixing 1 carat and 2 carat USD prices. 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.