Diamond Ring Rating Scale

For people who are in a time crunch here s a summary of the diamond rating scales and charts for your convenience.

Diamond ring rating scale.

Classification of diamond color on a d colorless z tinted scale. Diamond quality charts and rating scales illustrated. Each of the four c s carat weight cut color clarity is accompanied by a diamond chart illustrating the differences between grades. The gia diamond color grades range from d colorless to z light yellow or brown.

Color scale clarity 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. Many people ask why the gia diamond grading scale starts at d. Every diamond certified by the gia undergoes a thorough independent evaluation.

Find an ags jeweler or learn more about diamonds. 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. Here you will learn how gia diamond grades are established and how those grades affect the diamond s price. 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.

Arcane systems used grades of a c 1 3 and i iii etc. 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.