Rocks like quartz, well, quartz of optical quality weren't cheap.

具有像石英这样的光学品质的石头并不便宜。

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Like quartz, LGS is also a kind of material with multiple usages.

就像石英一样，LGS也是一种用途广泛的材料。

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However, an application like Quartz is an excellent candidate for easy integration, because it only needs to be started and shut down.

然而，类似Quartz的应用程序是简单集成的优秀候选项，因为它只需要启动和关闭。

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This is the same power source for things like quartz watches and kids' light-up sneakers.

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Already popular in countries like Australia and Israel, the quartz countertop market is now growing in the U.S, where engineered quartz has a 5% share.

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Rocks laid down at the time - some 65.5 million years ago - show a thin layer abundant in rare elements like Iridium, spherules and shocked Quartz that could only have come from a meteorite impact.

BBC: Closing the 'three metre gap'