This purity of faith is worth more than gold.

纯净的信心比金子还可贵……。

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Throughout history, gold has been a sign of purity, beauty and power. Calling something golden means it has great quality and value.

纵观历史，黄金一直是纯洁、美丽和权力的象征。称某种东西“金子般”意味着它具有很高的质量和价值。

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One interesting fact is a test for pure gold. Test for purity of gold, remelt and heat it.

一个有趣的事实就是黄金的检测，检测黄金的纯度，重新熔化和加热它。

youdao

Throughout history, gold has been a sign of purity, beauty and power.

VOA: special.2010.06.06

He learned, for example, that gold of 0.995 purity is the more commonly traded variety in India, the world's biggest market for the precious metal.

FORBES: On The Cover/Top Stories

This promise can be verified every minute of the day by observing the current rate of exchange between the dollar and gold, and, under a classical gold standard, by exchanging currency at a national bank for gold coins of a fixed weight and purity.

FORBES: The Dollar, Gold And The Quality Of Money

Actually, gold bullion is any form of pure, or nearly pure, gold that has been certified for its weight and purity.

FORBES: Getting Into The Gold Market