US guides
The center is the stone you grade carefully. The sides should not embarrass it.
A G center with J sides will show the gap in white gold. Keep the sides at the center’s color or better.
Clarity on tiny sides is less visible than color. Do not buy SI clutter that you can see as dark specks next to a clean center.
Pick the center on Carat Mate first. Then match sides with your US jeweler using that color grade. 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.