Which factors influence the value of a diamond?

The value of a diamond is primarily influenced by the Four Cs: carat weight, color, clarity, and cut quality.

Carat weight refers to the size of the diamond, with larger diamonds typically being more valuable due to their rarity. The color of a diamond affects its value, as certain colors may be more desirable than others; ideally, diamonds are colorless, and any presence of color can lower their value. Clarity evaluates the presence of internal or external imperfections; diamonds with fewer imperfections tend to be more valuable. Finally, cut quality plays a crucial role because it affects how light interacts with the diamond; a well-cut diamond will exhibit more brilliance and sparkle, making it more appealing and ultimately more valuable.

While other options mention aspects that can influence value, they do not encompass the comprehensive criteria that define diamond value in the gemology field accurately. For example, while rectangular shapes can be visually appealing, they are not standardized factors in the determination of diamond value as the Four Cs are.