Grades in the color of diamonds range from D-Z, D being truly colorless and of the highest quality. E and F are also graded as colorless while G, H, I and J are near colorless. Stones grades K, L, and M will have obvious hints of color and as the scale approaches P you may find subtle changes in hue and tone.
Most of the diamonds between colors D to J appear colorless in the face-up position and the only way to tell the difference is on a white paper and by the lab certificate.
Continue to learn about the Clarity of Diamonds or if you're ready, take the GIA Diamond Buyer Primer Course.
