GIA's diamond color-grading scale is the industry's most widely accepted grading system. The scale begins with the letter D, representing colorless, and G being near colorless.
Diamond carat weight is the measurement of how much a diamond weighs. A metric 'carat' is defined as 200 milligrams.
Flawless (FL) - No inclusions and no blemishes visible under 10x magnification.Internally Flawless (IF) - No inclusions visible under 10x magnification.Very, Very Slightly Included (VVS1 and VVS2) - Inclusions so slight they are difficult for a skilled grader to see under 10x magnification.Very Slightly Included (VS1 and VS2) - Inclusions are observed with effort under 10x magnification, but can be characterized as minor.Slightly Included (SI1 and SI2) - Inclusions are noticeable to a skilled grader under 10x magnification