Diamond Color Grades

D-E-F

Colorless. For all practical purposes, diamonds graded from D through F are considered colorless. While subtle graduations from D through F do exist, and are measurable by a gemologist (using 10X magnification to map the stone's interior), to all but the trained eye these stones appear perfect.

G-H-I-J

Nearly colorless. Most diamonds sold are in the G through J range. While the untrained eye still sees these stones as colorless when mounted, they are graded as slightly tinted. "J" being more pronouncedly colored or tinted than a "G" color, most stores stock stones in this range, and order in higher grades as required. Diamonds graded G through I show virtually no color that is visible to the untrained eye.

K-L-M

Faintly tinted, usually yellow. Diamonds graded from K through M show visibly more marked color, and are classified as faintly tinted or colored.

N-O-P-Q-R

Lightly tinted, usually yellow. Tint can be seen with the naked eye.

S-T-U-V-W-X-Y-Z

Tinted, usually yellow, may progress to brownish. Tint visible to the naked eye, even when mounted.

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