What is the difference between D and G color?

D is colorless. G is near colorless. Side by side, D has less body color. In a typical ring, many people cannot pick them apart once the stones are set, especially under 1 carat.

Which color grades look white?

D–F look colorless. G–H look white to most people in yellow gold. In white metal, F–G is the safer face-up range.

Does color mean the diamond is yellow?

Only as the letters move down the scale. Near-colorless grades are a slight absence of color, not a yellow stone.

Guides

Diamond color grade comparison

Diamond color grades run from D (colorless) through Z (light yellow or brown). The letters are a scale of less color, not a measure of sparkle.

How the scale is grouped

D–F are colorless. G–J are near colorless. K–M show a faint tint that many people notice face-up, especially in white metal. Further down the alphabet, tint is obvious.

Grading is done table-down against master stones, so the lab is looking for body color in a controlled way. You will see the diamond table-up, in a ring, under mixed light. Those are not the same view. The grade is still the right way to compare two listings.

Diamond color grade comparison scale D through J — Diamond color grade comparison — judge in similar metal colors.

What changes between letters

One letter is a small step. Three letters is a visible conversation, especially above 1.5 carats. D versus G is a real difference on the report and a subtle one face-up for many shoppers. D versus K is not subtle.

Brown or gray modifiers, when a lab notes them, matter more than squeezing from G to F. A stone with a tint the photo already shows will not become colorless in a different setting.

D versus G color diamond comparison — G is often the value sweet spot for white-looking rings.

Metal and size

Yellow and rose gold mask a bit of warm tint, so H–I can look white in those settings. White metal and platinum show color more, so many shoppers stay at F–G there.

Larger diamonds show color more. A grade you liked at 0.50 ct deserves another look at 2.00 ct.

Fluorescence can interact with perceived color — Check Strong fluorescence in daylight media.

Spend where color is visible

Do not default to D. Compare the letters you are choosing on actual stones in your carat range. Put the money into cut first on rounds, then buy the color you can see.

Lab-grown and natural diamonds use the same D–Z scale. The price of D color is not the same in both catalogs.

Carat Mate lists certified loose diamonds for shoppers in the United States, Canada, the UAE, London, and Australia. Prices are in USD everywhere. We ship to the United States, Canada, the UAE, London, and Australia.

Questions

What is the difference between D and G color?: D is colorless. G is near colorless. Side by side, D has less body color. In a typical ring, many people cannot pick them apart once the stones are set, especially under 1 carat.
Which color grades look white?: D–F look colorless. G–H look white to most people in yellow gold. In white metal, F–G is the safer face-up range.
Does color mean the diamond is yellow?: Only as the letters move down the scale. Near-colorless grades are a slight absence of color, not a yellow stone.