Diamond Ring Rating Scale

The gia laboratory issues diamond grading reports for loose natural diamonds in the d to z color range that weigh 0 15 carats or more.

Diamond ring rating scale.

Gia diamond grading reports are not issued for laboratory grown diamonds diamond simulants mounted diamonds or those that have undergone unstable treatments such as fracture filling or coating. The gia diamond color grades range from d colorless to z light yellow or brown. For people who are in a time crunch here s a summary of the diamond rating scales and charts for your convenience. Each of the four c s carat weight cut color clarity is accompanied by a diamond chart illustrating the differences between grades.

Arcane systems used grades of a c 1 3 and i iii etc. Many inclusions and blemishes are too tiny to be seen by anyone other than a trained diamond grader. Classification of diamond color on a d colorless z tinted scale. Color scale clarity scale.

Find an ags jeweler or learn more about diamonds. Every diamond certified by the gia undergoes a thorough independent evaluation. Many people ask why the gia diamond grading scale starts at d. Diamond quality charts and rating scales illustrated.

Here you will learn how gia diamond grades are established and how those grades affect the diamond s price. If a diamond possessing the finest diamond cut grade is also colorless free of inclusions and blemishes and weighs one carat it would be written as.