Stream & Field jewellers

While many diamonds appear colourless, or white, they may actually have subtle yellow or brown tones that can be detected when comparing diamonds side by side. Diamonds were formed under intense heat and pressure, and traces of other elements may have been incorporated into their atomic structure accounting for the variances in colour.
Under a normal colour range, the perfect colourless diamonds is considered the most rarest, and most valuable. The diamonds that are most common have slightly yellowish or brown tints.
The most common scale for grading diamonds is the alphabetical scale (developed by the Gemological Institute of America, G.I.A.) from D to Z, with D being colourless and Z being light yellow. Other scale that are still used is the Scandinavian standard, the Scan D.N. .

Click here for the international colour scheme-converter

Diamonds that are graded D/E or river are colourless and very rare. Thus, more expensive

Although the presence of colour makes a diamond less rare and valuable, some diamonds come out of the ground in vivid "fancy" colours - well defined reds, blues, pinks, greens, black and bright yellows. Also known as: fancy colour diamonds. These are highly prized and extremely rare.

more info >>The 4 C's: Cut

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