Diamond Colour

The subtle variations in diamond colour can significantly impact its overall brilliance and charm. Understanding the diamond colour scale is crucial when choosing the perfect diamond for your jewellery. Whether you prioritise the dazzling brilliance of a colourless diamond or appreciate the warmth of a faintly tinted stone, the right choice ultimately depends on personal preferences and budget considerations. 

The Diamond Colour Scale

The Gemmological Institute of America (GIA), a renowned authority in gemmology, established the diamond colour scale to objectively assess and grade the colour of diamonds. The scale ranges from D (colourless) to Z (light yellow or brown).

D-F: Colourless

Diamonds in the D to F range are considered colourless. These rare gems exhibit an absence of any noticeable colour, appearing pure and transparent. Their exceptional brightness and fire make them highly coveted and, consequently, more valuable.

G-J: Near Colourless

Diamonds in the G to J range are classified as near colourless. While they may show faint traces of colour, these nuances are typically invisible to the untrained eye. Near colourless diamonds offer an excellent balance of beauty and value, making them a popular choice for engagement rings and other jewellery.

K-M: Faint

Diamonds in the K to M range exhibit a faint yellow or brown tint. While these subtle hues are more noticeable than in higher-grade diamonds, they can still be an appealing option for those seeking a larger stone within a more budget-friendly range.

N-R: Very Light

The diamonds in the N to R range display a very light colour. The presence of colour becomes more apparent, and these diamonds may be suitable for those who prioritise size over colour. However, it's important to note that individual preferences vary, and some may find the warmth of these diamonds charming.

S-Z: Light

Diamonds in the S to Z range are categorised as light in colour. The noticeable presence of yellow or brown tones may impact the overall beauty of the diamond. 

*This image is indicative and for illustrative purposes.

Factors Affecting Diamond Colour

Several factors contribute to a diamond's colour, including the presence of trace elements, the diamond's crystal lattice structure, and the way it interacts with light. Nitrogen, for example, can impart a yellow tint to diamonds, while other elements may result in different hues.
It's essential to consider the cut and setting of a diamond when evaluating its colour. A well-cut diamond reflects light in a way that can mask colour imperfections, enhancing its overall brilliance.