A diamond’s sparkle is one of the first things people notice. That flash of light across the stone can make a diamond feel almost alive, changing as the stone moves from one angle to another. But what actually makes a diamond sparkle? The answer is more nuanced than simply saying that diamonds are highly reflective. A diamond’s sparkle is primarily influenced by its cut, proportions, symmetry, polish, and the way it interacts with light. Clarity and the diamond’s shape can…
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