What is the meaning of "all that glitters is not gold"?

The meaning of "all that glitters is not gold" is:

something that looks attractive may not be valuable

What is the definition of "all that glitters is not gold"?

The definition of "all that glitters is not gold" is:

something that looks attractive may not be valuable


"all that glitters is not gold" means

something that looks attractive may not be valuable

Example Sentences:

A: My boyfriend bought me a diamond ring in Chinatown, and it only cost him $100!

B: Well, all that glitters is not gold. You should get a jeweler to check it to make sure it is real.

Sarah’s new cell phone looks great, but it doesn’t work at all. All that glitters is not gold.

Media:

all that glitters is not gold idiom