Carat weight measures the size of the diamond, with one carat equivalent to 0.2 grams. Larger diamonds are rarer and more valuable, but carat weight alone does not determine a diamond’s quality. Carat weight is often considered alongside the other 3C’s to evaluate the overall value and desirability of the diamond.

Clarity refers to the presence of internal and external imperfections, known as inclusions and blemishes, within a diamond. These imperfections can affect the diamond's light performance and overall appearance. The clarity grade ranges from Flawless (no inclusions or blemishes visible under 10x magnification) to Included (inclusions and/or blemishes visible to the naked eye). Higher clarity grades generally indicate a more visually appealing diamond.

The cut of a diamond determines how well it has been shaped and faceted from its raw form. It affects how light is reflected and refracted within the diamond, influencing its brilliance and sparkle. A well-cut diamond will exhibit a dazzling array of light and color, while a poorly cut diamond may appear dull or lifeless. The cut is graded on a scale from Excellent to Poor, with higher grades indicating superior craftsmanship.