The term used for the numerical relationship between the length and width of a fancy cut (width normalized to 1) is

The term used for the numerical relationship between the length and width of a fancy cut (width normalized to 1) is

• A. Lower girdle facet percentage
• B. Length-to-width ratio
• C. London Diamond Syndicate
• D. Laser drilling

Answer: (C)

The main idea here is that the shape of a fancy-cut diamond is described by how long it is relative to its width. That relationship is captured by the length-to-width ratio. If you normalize the width to 1, the length becomes a single number—the ratio itself—which succinctly describes the silhouette and lets you compare different fancy shapes (like pears, ovals, marquises, or emerald cuts) regardless of size. The higher the ratio, the more elongated the outline; closer to 1 means a more square or squat shape. The other terms refer to unrelated aspects: lower girdle facet percentage deals with how much of the girdle is faceted, laser drilling is a treatment method, and London Diamond Syndicate isn’t a standard term used for diamond proportions.

The main idea here is that the shape of a fancy-cut diamond is described by how long it is relative to its width. That relationship is captured by the length-to-width ratio. If you normalize the width to 1, the length becomes a single number—the ratio itself—which succinctly describes the silhouette and lets you compare different fancy shapes (like pears, ovals, marquises, or emerald cuts) regardless of size. The higher the ratio, the more elongated the outline; closer to 1 means a more square or squat shape. The other terms refer to unrelated aspects: lower girdle facet percentage deals with how much of the girdle is faceted, laser drilling is a treatment method, and London Diamond Syndicate isn’t a standard term used for diamond proportions.