Gia Diamond Scale

Official gia color scale.

Gia diamond scale. Diamonds of d k and z gia color grade the gia grades diamonds on a scale of d colorless through z light color. Color clarity cut and carat weight. The gia diamond grading report includes an assessment of a diamond s 4cs color clarity cut and carat weight along with a plotted diagram of its clarity characteristics and a graphic representation of the diamond s proportions. This short video explains the gia clarity scale and how gia classifies diamonds with a clarity grade ranging from flawless to i 3 by using a 10x magnification loupe and a microscope to see and plot the diamond s inclusions.

Many inclusions and blemishes are too tiny to be seen by anyone other than a trained diamond grader. Gia developed the definitive diamond color scale or chart in the early 1950s a time when there were a lot of different and subjective terms in the marketplace for describing a diamond s color. All d z diamonds are considered white even. Gia diamond grading report.

Diamond quality can be communicated in a universal language and diamond buying consumers can know exactly what they are about to purchase. The diamond industry has adopted the gia diamond color scale. The 4cs means two very important things. This short video explains the gia color scale and how gia classifies a diamond with a letter grade from d to z by comparing it to masterstones representing the color grades on the gia scale.

The gia diamond dossier is a more concise compact version of the gia diamond grading report and is available for diamonds that weigh between 0 15 and 1 99 carats. For standard round brilliant cut diamonds falling in the d to z color range. Almost every diamond sold today is rated using the gia color scale whether it was actually certified by the gia or not. Another mineral graphite also contains only carbon but its formation process and crystal structure are very different.

Diamond forms under high temperature and pressure conditions that exist only about 100 miles beneath the earth s surface. This report includes all the important 4cs grading results as the diamond grading report but does not include the plotted diagram. Today the 4cs of diamond quality is the universal method for assessing the quality of any diamond anywhere in the world. Gia created the first and now globally accepted standard for describing diamonds.