Colour of diamond refers to a diamond absence of color. The most popular grading system adopted widely nowadays is GIA (Gemology Institute of America). GIA grades diamonds’ colour from D (colorless) to Z (faint yellow tinge). For D to H graded diamond, it is difficult for non-professionals to identify, especially for those which have already been set on jewelry. Diamonds with higher color appears to be whiter but both high and low-colored diamonds can offer good luster, brilliance and scintillation.

(Please go to for more information about 4Cs by
Gemological Institute of America)

Diamond Colour Grading

According to GIA approval, colour grade would be defined from D to Z. The colour with D grade is the premier possible.

D colour

D grade diamonds are the highest and completely colourless diamond. They are extremely rare some people are fond of this colour.

E colour

E grade diamonds are almost completely colourless. They are very rare and only very minor traces of colour can be identified by an expert gemologist.

F colour

F grade diamonds are almost colourless. They are rare and very small traces of colour can be found by an expert gemologist.

G colour

G grade diamonds are nearly colourless. It is difficult to detect by naked eye unless use side by side method to compare with a better colour diamond.

H colour

H grade diamonds are next to colourless. They have absolutely white colour when face up or after setting in Jewelry. It is difficult for non professional to detect.

I colour

I grade diamonds have very slight tinge of colour. They look white when face up or after setting in Jewelry. This colour offers great value.

J colour

J grade diamonds have slight tinge of colour. They look quiet white when face up. J grade is always 10% to 20% cheaper than I colour.

K colour

K grade diamonds have very minor yellow tinge of colour. They still look quiet white when face up. They are suitable for those not looking for colourless diamond.

L colour

L grade diamonds have slight yellow tinge of colour. They are good choice for budget buyer.

M colour

M grade diamonds have little yellow tinge of colour. They are very good choice for customer with limited budget.

N colour

N-Z grade diamonds are not offered by Diamond Collection.

Fancy Colour

Fancy colour is different from colourless or yellow tinge of colour. The colour shown in fancy colour diamonds are a natural colour. Since diamond possesses natural colour is scarcity (only 1% of all diamonds), which is very precious.