Color

A colorless diamond reflects all colors of light. But a colorless diamond is very rare; most diamonds contain slight traces of yellow, brown, or gray, which limits the spectra of light that is reflected. So the less color present, the more reflected light, and the better the color grade.

 

Grading Color from A - Z

Diamonds are graded on a letter scale from D to Z: D, E, and F diamonds have no color detectable to the unaided eye; those graded G, H, I, or J are nearly colorless, but a trained gemologist can detect a slight yellow cast. K through Z colored diamonds have yellow or gray color visible to the unaided eye.

The figure below illustrates the presence of color in diamonds from D to Z color.

 

Amir Agha Diamond Color

Amir Agha does not carry diamonds rated lower than H. Those diamonds have color that is detectable even to the untrained eye. Those rated K to M have a faint color, while any diamond graded from N through Z carries a noticeable yellow tint. All diamonds offered by Amir Agha are colorless to near colorless and fall within the D-H range.

 

What Color Grade is the Best ?

·  For the purist, look for a colorless diamond with a grade of D-F and a fluorescence rating of none, faint, or slight.

·  For an excellent value in a diamond with no noticeable color to the unaided eye, look for a near-colorless grade of G-I, and a fluorescence grade of medium or strong blue.

·  Or, if you'd rather not compromise on color but would like to stay on budget, choose a diamond with a good cut and SI1–SI2 clarity and consider going with a very strong fluorescence. It will still be beautiful to the unaided eye and you may prefer the unique effect of a strong fluorescence.

The table below compares the prices of diamonds with the same clarity grade (VS1) and carat weight, but varying color grades.

 

At a Glance

D, E, F Diamonds:  Colorless.

G, H, I, J Diamonds:  Near-colorless. Only a trained gemologist can identify a trace of color.

K, L, M Diamonds:  Slight yellow color visible to the untrained eye.

N, O, P, Q, R Diamonds:  More yellow color visible to the untrained eye.

S through Z Diamonds:  Yellow color obvious even to the untrained eye.

What Happened to A, B, & C?
When gemologists began using this scale they reserved the A, B, and C grades for more colorless diamonds yet to be graded — none have been found to date.