Gia Diamond Ratings

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.

Gia diamond ratings.

Diamond 4cs and gemstone information. Insist that any diamond you buy come with an indisputable verification of its quality. 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. However these distinctions make a very.

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. All d z diamonds are considered white even. Almost every diamond sold today is rated using the gia color scale whether it was actually certified by the gia or not.

For loose natural d to z color diamonds only weighing 0 15 carats or more that were submitted for rough analysis. These reports are issued by the gemological institute of america gia which is among the most respected organizations in the diamond industry. Gia diamond grading report the gia set the standard for diamond grading and gemological identification and their diamond grading system serves as the international gem and jewelry industry s benchmark. Many inclusions and blemishes are too tiny to be seen by anyone other than a trained diamond grader.

The differences in diamonds can be so subtle even a trained jeweler can t recognize them without lab verification. For standard round brilliant cut diamonds falling in the d to z color range. Diamond quality can be communicated in a universal language and diamond buying consumers can know exactly what they are about to purchase. The 4cs means two very important things.

Diamonds of d k and z gia color grade the gia grades diamonds on a scale of d colorless through z light color. The diamond industry has adopted the gia diamond color scale. Gia diamond grading report. 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.

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. This report includes all the important 4cs grading results as the diamond grading report but does not include the plotted diagram.