GIA have 23 level colour-grading scale for diamonds, begin with the letter D and end with letter Z, this grading are all industry standard with certification. Letter D represents colourless and the lower level of colour scale, the more yellowish it is.

When guiding our customer to look for their perfect stone, budget is the main factor. The closer they approach colourless, the higher their value. In addition, purity, cutting and sizes are also main key to define the value.  Basically, D-F Colour diamonds are the rarest and highest quality with pure icy look like a drop of water. G-H Colour Diamonds are less colourless with no discernible colour. The colour following by H would be visually different and budget- friendly pick. Would you have any concerns, you can talk to our diamond expertise by contacting us.