Gia Diamond Scale

Gia created the 4cs color clarity cut and carat weight as a universal method for establishing the quality of any diamond anywhere in the world.

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. 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. 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. Diamond quality can be communicated in a universal language and diamond buying consumers can know exactly what they are about to purchase.

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. Today the 4cs of diamond quality is the universal method for assessing the quality of any diamond anywhere in the world. Diamond forms under high temperature and pressure conditions that exist only about 100 miles beneath the earth s surface. Diamond s carbon atoms are bonded in essentially the same way in all directions.

For standard round brilliant cut diamonds falling in the d to z color range. White blue white aaaa for example. Another mineral graphite also contains only carbon but its formation process and crystal structure are very different. Gia diamond grading report.

Many inclusions and blemishes are too tiny to be seen by anyone other than a trained diamond grader. 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 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 4cs means two very important things.

Official gia color scale. All d z diamonds are considered white even. Gia created the first and now globally accepted standard for describing diamonds. Color clarity cut and carat weight.