Diamond Colour
Diamond colour refers to how much colour (usually yellow or brown) is visible in a diamond. In white diamonds (the most common type used in engagement rings), less colour = higher quality and value because colourless diamonds allow light to pass through more and sparkle brighter.
Diamonds are graded on a standard scale from D to Z that measures the degree of colourlessness:
• D = completely colourless
• Z = noticeable light yellow or brown tint
A gemologist compares the diamond to master stones under controlled lighting to determine its exact colour grade.
The Diamond Colour Scale (D–Z)
The scale is broken into five general categories:
1. Colourless (D–F)
• Absolutely colourless or nearly so
• Very rare and the most valuable
• Choice for those who want the brightest, whitest diamond 
2. Near Colourless (G–J)
• Very slight colour noticeable only to a trained eye
• Excellent value for money — looks colourless once set in jewellery
• A popular range for engagement rings 
3. Faint Colour (K–M)
• A light yellow tint becomes visible
• More affordable option
• Best matched with yellow or rose gold if colour is noticeable 
4. Very Light (N–R)
• Colour is more obvious
• Less expensive and not usually chosen for classic white diamond rings 
5. Light (S–Z)
• Stronger yellow or brown tint
• Still not “fancy colour” unless it enters the fancy grading system
• Often chosen for specific style preferences 
Fancy Colour Diamonds
Separate from the D–Z white diamond scale are fancy colour diamonds, stones graded for intense natural colours like:
• Pink
• Blue
• Yellow
• Green
These are graded based on colour intensity, and the richer the colour, the more valuable the diamond.
How Colour Affects Appearance and Value
Less colour = higher price: Colourless diamonds (D–F) are rare, so they typically cost more.
Setting matters: The metal colour (e.g., white gold vs yellow gold) can make a diamond look different. A warmer metal can help hide faint colour; white metal shows colour more clearly.
Cut quality can outweigh colour: A well-cut diamond can sparkle so much that colour is less obvious to the eye.
📝 Tips When Choosing Diamond Colour
Look at diamonds in the setting you want, not just loose stones.
Think about your metal colour — warmer metals can flatter lower colours.
Balance colour, cut, clarity, and carat to meet both budget and visual goal