Question

What are the three precious metals?

Answer 1

Well, the three coinage metals are copper, silver, and gold......and traditionally these metals were used for currency.

Explanation:

But there a lot more metals with intrinsic monetary value than these three. Platinum, iridium, rhodium, and many more more metals have substantial value per `"gram"` or per `"troy ounce"` (whatever these are - traditionally troy ounces were used to express masses of precious metals). Trade and speculation in precious metals is extensive, and you can find the prices per gram or per ounce on the web.