Meaning of the word "all that glitters is not gold" in English

What does "all that glitters is not gold" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

all that glitters is not gold

US /ɔl ðæt ˈɡlɪtərz ɪz nɑt ɡoʊld/
UK /ɔːl ðæt ˈɡlɪtəz ɪz nɒt ɡəʊld/
"all that glitters is not gold" picture

Idiom

not everything that looks valuable or attractive is actually valuable or good

Example:
She thought her new job would be perfect, but she soon realized that all that glitters is not gold.
The flashy car looked great, but it broke down constantly, proving that all that glitters is not gold.