D (completely colorless) to Z (light yellow or brown).
Clarity measures the internal characteristics (inclusions) and surface irregularities (blemishes). 10 Tips for Buying a Diamond Engagement Ring - GIA 4Cs what jewelers buy diamonds
Cut refers to how well a diamond's facets interact with light, rather than its shape. It is widely considered the most critical factor because it directly determines a diamond's brilliance (brightness), fire (flashes of color), and scintillation (sparkle). Maximizes light return for the most sparkle. Poor Cut: Can make even a high-quality diamond look dull. 2. Color (Lack of Color) D (completely colorless) to Z (light yellow or brown)