'Colour'

Diamonds of high colour grade are judged on how bright they are D E F G, most diamonds are admired for their lack of colour or with coloured diamonds, yellow, blue, pink, judged on their saturation of colour

D E F G - Diamonds within these grades are judged on their brightness

H - Where most people perceive colour

I thru J - Slight tint of colour seen

K-L - Tint of colour

M-Z - Tinted