Until diamonds are cut and polished, they do not sparkle like those you see on a ring-they just look like small, blue-grey stones.

钻石在被切割和磨光以前，人像钻戒上的钻石那样闪闪发光——它们看看起来更像一块块深灰色的小石头。

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The cut gives each diamond its unique sparkle and brilliance by allowing the maximum amount of light to enter and reflect back out of the diamond.

优美的切割使钻石入射和折射最多的光线，充分呈现钻石蕴藏的火光华采。

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It is really the cut and proportioning of the stone that determines its sparkle.

真是裁剪及配料的石头，注定了其光芒。

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She uses a rainbow of precious and semiprecious stones, cutting the latter into droplet-like briolettes (a cut traditionally reserved for diamonds) to intensify their sparkle.

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Mr Fox can just polish the jewels, or he can cut the rough diamonds so that they, too, sparkle.

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