Diamond Color Actually Means Lack of Color.
The diamond color evaluation of most gem-quality diamonds is based on the absence of color. A chemically pure and structurally perfect diamond has no hue, like a drop of pure water, and consequently, a higher value.
Color is the second most important characteristic because the human eye detects sparkle first and color second.
As a diamond's color grade improves, it's price increases.
The color difference cannot be detected unless under professional magnification.
To maximize your budget, choose what's called a near-colorless diamond (grades G-H) because the naked eye will still not see traces of color for these grades.