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Understanding the Refractive Index in Natural Gemstones: Variations and ExamplesThe refractive index (RI) is a fundamental property that measures how light bends, or refracts, as it passes through a substance. In the world of gemology, the RI of natural gemstones is not just a scientific measurement but also a key characteristic that influences their beauty and value. This article delves into the reasons behind the varying refractive indices of natural gemstones and provides examples to illustra …