color is the second most important factor to consider, and the reason is quite simple: there is no hiding from it.
in 1953, gia came up with the first comprehensive color grading system. the scale starts with d (colorless) and goes down to z (light yellow).
the majority of ‘white diamonds’ have yellow body color, brown is the second most common color body color.
shape and fluorescence 'may' have a visual impact on the color but they don’t ‘change’ the actual grade.
insider fact: when it comes to creating a piece of jewelry for the main diamond, it is important any smaller diamonds are within a few color grades of the center.