What term defines the star facet length percentage?

What term defines the star facet length percentage?

• A. Star facet length percentage
• B. Sorting pad
• C. Step cut
• D. Specific gravity (SG)

Answer: (A)

The question tests how facet-length terminology is used in describing a round brilliant diamond. The star facet length percentage is the exact term for describing how long the star facets are, expressed as a percentage of the girdle diameter. This precise label communicates a specific measurement that helps describe the crown’s symmetry and how light will return through the stone. Why this term fits best: it directly names the measurement in question—the length of the star facets as a percentage of the reference diameter. The other options point to unrelated ideas: a sorting pad is a non-facet-related tool or step, a step cut describes a different cut style, and specific gravity is a physical property, not a facet-length descriptor.

The question tests how facet-length terminology is used in describing a round brilliant diamond. The star facet length percentage is the exact term for describing how long the star facets are, expressed as a percentage of the girdle diameter. This precise label communicates a specific measurement that helps describe the crown’s symmetry and how light will return through the stone.

Why this term fits best: it directly names the measurement in question—the length of the star facets as a percentage of the reference diameter. The other options point to unrelated ideas: a sorting pad is a non-facet-related tool or step, a step cut describes a different cut style, and specific gravity is a physical property, not a facet-length descriptor.