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Diamond Education Colour

Colour is one of the fundamental attributes of a diamond and colour grades actually refer to how colourless or “white” a stone is. Diamond colour is graded according to the GIA* colour scale, from D to Z, where D is rated as the most colourless, and therefore the most sought after and costly.

Further down the scale, the colours become more yellow and finally brown. However, to the untrained eye, there is little variation in the D-H range and therefore slightly lower grades provide much better value for money while not necessarily appearing vastly different. Stones graded I and below alter in colour and any diamonds graded J and below will be slightly tainted.

*Although GIA sets the standard for diamond grading, there are several other prestigious labs which offer certificates but these do differ slightly from those set out by GIA. To read more about how colour grading varies amongst the different laboratories and certificates please click here.

White / Colourless Diamonds Diamond Colour Grading D

Colour: D

D is the highest colour grade attributed to a diamond, denoting that the stone is completely colourless (white); as such, they are extremely rare and command the highest prices.

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Diamond Colour Grading E

Colour: E

The colour difference between a D and an E graded stone is usually only visible to an expert gemmologist using master stones as a comparison, although E graded stones are slightly cheaper.

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Diamond Colour Grading F

Colour: F

The colour difference between an E and an F is only visible to an expert gemmologist using master stones as a comparison. F grades are the lowest and therefore least expensive of the premium colours.

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Nearly White / Colourless Diamonds Diamond Colour Grading G

Colour: G

G graded diamonds are nearly colourless and a slight colour difference only become perceptible when compared to diamonds of grades D or E. G stones appear colourless especially once set and therefore offer excellent value for money.

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Diamond Colour Grading H

Colour: H

H coloured diamonds are near colourless diamonds which still appear totally white or colourless if they are not compared side by side with higher colour graded stones. The H colour is generally considered the watershed between colourless diamonds and slightly tinted diamonds. As a result, the H colour is great value for money and unsurprisingly a very popular option.

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Diamond Colour Grading I

Colour: I

I coloured diamonds are very slightly tinted diamonds, however, once set in jewellery, these stones may appear colourless. If you are looking to maximize your budget, then an I coloured diamond offers great value for money.

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Tinted Diamonds Diamond Colour Grading J

Colour: J

J coloured diamonds are very slightly tinted diamonds, however, once set in jewellery, especially in yellow gold, it is harder to see the slight yellow tint which the J grade produces. If you are looking to maximize your budget or if you have a preference for slightly yellow tinted diamonds, then the J grade is a great option, offering fantastic value for money.

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Diamond Colour Grading K

Colour: K

K coloured diamonds are slightly tinted diamonds, however, once set in jewellery, especially in yellow gold, it is harder to see the slight yellow tint which the K grade produces. If you are looking to maximize your budget or have a preference for slightly yellow tinted diamonds, then the K grade is a great option, offering excellent value for money.

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Diamond Colour Grading K to Z

Colour: K - Z

Seventy Seven Diamonds currently offers only stones in the higher range of D-J, as these are the only grades we recommend, however, lower clarity grades can be made available on special request.

Expert Advice at Seventy Seven Diamonds

When it comes to colour, those seeking a purer stone will generally only consider stones in the D to F, or premium range. However, those less concerned with classified purity but rather the appearance of a colourless stone can get great value for money in selecting a diamond within the G to I range.

If on a stricter budget, it is always worth considering a J coloured stone which offers great value for money as it can appear nearly colourless when set in certain jewellery. It is especially important to remember that jewellery settings can greatly impact the appearance of colour.

Expert advice at Seventy Seven Diamonds

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