The term "color" in diamond buying is really the opposite of what you may think. When making your selection, you're not actually looking for the presence of a particular color. Instead, your ideal diamond will have as little color as possible. Most diamonds appear icy white, but many have tiny hints of color, usually yellow.
The closer to white or "colorless" the stone appears, the more valuable it is. Colorless diamonds are extremely rare, and therefore very valuable. The reason - the absence of color allows more light to pass through the stone. As more light enters, more light also exits the diamond, thereby emitting a higher level of sparkle or "fire". However, there are no hard and fast rules for what color makes a diamond beautiful. Color characteristics in diamonds are a result of composition and will not change over time.
Diamonds were formed under intense heat and pressure. Colorless diamonds are composed of pure carbon. Traces of other elements incorporated into their atomic structure account for the variances in color. A single change in color grade can significantly affect a diamond's value.
For grading a diamonds color we use the alphabet scale developed by the Gemological Institute of America (GIA). The top end of this scale starts at "D", which represents the most colorless and highest quality stone available. The ratings continue all the way through the alphabet to "Z", with each letter indicating a slight increase in the amount of color (usually light yellow or brown) present in the stone.
Darker colored diamonds (K - Z) are particularly desirable when set in yellow gold. Higher colored whites (D - J) look stunning set in white gold or platinum.
Only 3 of the 23 grades are truly colorless. Gems of this level are rare and comprise 2% of the total number of gem-quality diamonds. Depending on size, a single grade in color can affect a diamond's value by thousands of dollars.
The color of the setting is also very important. A white diamond looks best in a white setting. This is why our engagement rings are offered in white gold or two tone, a yellow ring with a white gold setting.
Expert Guidance
When purchasing your diamond, consider this:
- Diamonds rated D through F are nearly perfect in terms of color and are extremely valuable. This level of color quality can't miss the target. However, you do not have to purchase a diamond in this part of the color scale to get a beautiful stone.
- Diamonds with ratings of G through J do contain slight color, but none that is visible to the untrained eye. These diamonds are good when trying to maximize stone size and keeping within a budget.
Going one-step further, diamonds rated K through M will begin to show a hint of faint yellow in the stone, N - Z ratings contain visible yellow. To ensure that your diamond purchase is of the highest possible quality, Danforth Diamond does not offer any loose diamonds with a color rating below "J". Lower color grades can be used for diamonds set in yellow gold earrings and pendant type jewelry. |
A very rare and expensive type of diamond, called "fancy color diamonds," may come in blue, green, yellow or other colors. These are the only diamonds actually made more valuable because their color exceeds the GIA color scale. 
