- Of the 4Cs, colour is the second most important characteristic because the human eye detects sparkle first (diamond cut) and colour second.
- As a diamond's colour grade improves, it's price increases. However, at a certain point, the colour difference cannot be detected unless under professional magnification.
- To maximise your budget, choose what's called a near-colourless diamond (grades G-H) because the naked eye will still not see traces of colour for these grades.
Colour manifests itself in a diamond as a pale yellow. This is why a diamond's colour grade is based on its lack of colour. Blue Nile offers only Colourless (grades D-F) to Near-Colourless (grades G-H) diamonds to assure that any natural colour present is typically undetectable to the unaided eye.