Diamond clarity refers to the presence of internal or external imperfections, known as inclusions and blemishes, respectively. These flaws can affect a diamond's overall appearance and brilliance. Clarity is graded on a scale from Flawless (no visible imperfections) to Included (visible flaws), with several grades in between.
The clarity grading system is part of the Gemological Institute of America (GIA) standards, which help consumers understand a diamond's quality. Higher clarity grades typically result in a more valuable diamond, as they are rarer and more desirable. However, many diamonds with minor imperfections can still appear stunning to the naked eye.