The child is as precious as gold.

这个孩子像黄金那样宝贵。

youdao

Your promise is as precious as gold.

你的承诺像金子一样贵重。

youdao

It's said that fruit in the morning is as precious as gold.

据说早上的水果跟黄金一样珍贵。

youdao

And isn't that clear already from their colors, the material that they're made of Gold and silver, these colors marked them as fashioned, precious objects, inorganic, and in all these ways beyond time and nature, growth or decay.

从它们的颜色上很容易知道，制作它们的材料,金银说明它们是,特制的珍贵的物件，非自然生长的，这些都是超越时间自然,不会生长或衰亡。

耶鲁公开课 - 现代诗歌课程节选

Unlike such other precious commodities as gold, whose price has yo-yoed over the years, the average price of diamonds has maintained a relentless upward creep.

ECONOMIST: THE DIAMOND BUSINESS

My take: While this is likely an investor concern, it would presumably have more of an impact on industrial metals, such as copper, as opposed to precious metals, such as gold.

FORBES: What To Make Of The Dramatic Drop In Gold Prices

Monetary policy would then be guided by the market prices of a basket of inflation sensitive precious commodities such as gold.

FORBES: To Win The Debt-Ceiling Debate, We Must Discredit Obama's Debt Dishonesty