Understanding the Oval Diamond Bow Tie Effect

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When you look at an oval diamond, sometimes you'll notice a dark, bow-tie-shaped shadow across the center. That's the bow tie effect, and it's basically light getting trapped in the diamond's facets instead of bouncing back to your eye. It's not a flaw per se, but how the stone is cut really matters—a well-cut oval will minimize that dark area, making the diamond look brighter and more lively. So if you're shopping for an oval, pay attention to how much of that bow tie you see in different ligh…