Gia Diamond Ratings

Diamonds of d k and z gia color grade the gia grades diamonds on a scale of d colorless through z light color.

Gia diamond ratings.

Many inclusions and blemishes are too tiny to be seen by anyone other than a trained diamond grader. Many of these diamond color distinctions are so subtle that they are invisible to the untrained eye. 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. A diamond grading report from an unbiased scientific source such as gia is more than important information it s proof of what you are buying.

Almost every diamond sold today is rated using the gia color scale whether it was actually certified by the gia or not. This report includes all the important 4cs grading results as the diamond grading report but does not include the plotted diagram. For loose natural d to z color diamonds only weighing 0 15 carats or more that were submitted for rough analysis. The diamond industry has adopted the gia diamond color scale.

All d z diamonds are considered white even. 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. Gia s d to z diamond color grading system measures the degree of colorlessness by comparing a stone under controlled lighting and precise viewing conditions to masterstones of established color value. The 4cs means two very important things.

The world s foremost authority in gemology established in 1931 gia protects the public through gemological research education impartial gem identification and grading services and instrument development. Gia diamond grading report. These reports are issued by the gemological institute of america gia which is among the most respected organizations in the diamond industry. For standard round brilliant cut diamonds falling in the d to z color range.

The differences in diamonds can be so subtle even a trained jeweler can t recognize them without lab verification. 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. 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 4cs and gemstone information.

However these distinctions make a very. Full 4cs assessment with a plotted clarity diagram geographic origin and gia report number laser inscription.