Diamonds in the normal colour range are colourless, and they are described using the D-to-Z colour-grading scale, where D signifies a completely colourless stone, and Z means an easily noticeable yellow or brown tint. However, the world of diamonds is not limited to this scale. There are rare specimens that come in a variety of colours and shades, which are commonly called “Fancy Colour Diamonds” or simply “Fancy Diamonds”.