Light return

Light return refers to the brightness and sparkle seen when light reflects from the internal and external surfaces of a gemstone.

Part of speech: noun
Definition: In the jewelry industry, 'light return' is a critical factor that determines the brilliance and desirability of gemstones, especially diamonds. It measures the efficiency with which a gemstone returns light to the observer's eye after it enters the stone, which is essential for its sparkle and visual appeal. A high level of light return indicates that a gemstone can reflect a significant amount of light, leading to an intense sparkle, often referred to as 'brilliance' in diamonds. The cutting style, symmetry, and proportions of a gemstone have a substantial influence on its light return, making precise craftsmanship crucial for maximizing this effect. Stones that exhibit excellent light return are highly sought after in the jewelry market for their captivating beauty and are considered to be of superior quality.