Translation of ''all that glitters is not gold?

The saying "all that glitters is not gold" means that anything that looks so sparkling, nice, or rich, may turn out to be fool's gold or fake.

In concrete terms, a shiny new watch may look like it is 24-carat solid gold, but it may only be gold-plated (covering of a thin gold or gold-color over another cheap metal).

In abstract terms, a person may see dollar signs when introduced to a "really great deal", but if the person investigates the deal they may often find it is not worth the paper the deal is printed on.