Diamond Colour Guide

Diamond colour refers to the absence of any noticeable tint in a stone. Most diamonds appear almost colourless, although subtle brown or yellow hues may still be present. Generally, the more pronounced the yellow tint, the lower the stone’s quality and value.

Historical Background & Grading Scale
The significance of diamond colour has been studied for centuries. In the 1950s, the Gemological Institute of America developed a definitive colour scale, which ranges from D (the highest quality, virtually colourless) to Z (stones with a more noticeable tint). The deliberate omission of grades A through C was designed to leave room for potential future discoveries of even purer stones.

Key Points in Diamond Colour Grading

  • Diminishing Returns: For the average eye, differences between diamonds in the D-F range are minimal. If you’re seeking cost savings, choosing a diamond a few grades lower may not make a visible difference.
  • Impact on Larger Stones: With larger diamonds, any hint of colour is more apparent. Therefore, when opting for a higher carat weight, it’s wise to choose a stone with a higher colour grade.
  • Shape Considerations: Diamonds with many facets, such as round cuts, have excellent reflective qualities that can mask slight colour variations better than square or princess cuts.
  • Metal Setting Influence: The type of metal used in the setting can also influence the perception of colour. Yellow gold, for example, can help disguise subtle colour tones in the diamond.
  • Fluorescence: While small to moderate fluorescence is typically only noticeable under UV light and often not a major concern, it can affect the overall appearance of the diamond by emitting a blue glow, thereby slightly reducing the stone’s aesthetic appeal.

Understanding these factors will help you strike the right balance between beauty, quality, and cost when selecting the perfect diamond.

Diamond Color Grading

Colourless Category : Colour D | E | F

Colourless Category diamond possesses the highest color purity and is a symbol of perfection. It is considered extremely rare and has no recognizable shades of color.

Near Colourless Category: Colour G | H | I | J

This Category diamond has excellent beauty and contains a minute shade of color that is undetectable by the untrained eye.

Faint Category: Colour K | L | M

These diamonds have a barely noticeable hint of color. They still appear quite white and offer a great balance of beauty and affordability. Perfect for those who appreciate a softer warmth in their stone.

Very Light Category: Colour N | O-P | Q-R

These diamonds show a touch more color, though they remain bright and lively. A wonderful option for a larger stone at a more accessible price point, especially when paired with warm-toned metals.

Light Category: Colour S-T | U-V | W-X | Y-Z

These diamonds display a visible tint, which can look striking in yellow or rose gold settings. They offer unique character, vintage charm, and a distinctive look that many find appealing.