Why Diamonds Are Graded?
Diamonds have been treasured for centuries, but their quality wasn’t always easy to compare. Grading systems were created so diamonds could be evaluated using the same industry wide standards—making value clear and consistent for both jewelers and buyers. Today’s grading scale takes the guesswork out of diamond shopping, giving you confidence in your selection.

Clarity Is Graded Under 10× Magnification
Diamond clarity is evaluated by identifying internal inclusions and external blemishes using standard 10× magnification, as defined by the GIA.
Clarity Grades Range From Flawless to Included
The GIA clarity scale includes 11 grades: FL, IF, VVS1–VVS2, VS1–VS2, SI1–SI2, and I1–I3, based on the number, size, position, and visibility of clarity characteristics.
Clarity Characteristics Form Naturally During Growth
Inclusions and blemishes develop during a diamond’s natural formation process in both natural and synthetic diamonds, and their characteristics help gemologists identify and grade each stone.