Most fancy-colored diamond reports will indicate whether the color is evenly dispersed under “Distribution” category. The distribution of the color should be "even" but this is not always the case. Sometimes color occurs in zones, alternating with colorless zones, and the report will indicate "uneven" color distribution.
Always view fancy-color diamonds in more than one type of lighting environment to determine color trueness.
For more information on diamonds read DoW’s 4C’s on fancy-colored diamonds information. More