Answer:
The common idiomatic expression, "all that glitters is not gold," means that some things that are "glittery" — things often considered attractive or desirable — aren’t necessarily good
Explanation:- all that glitters is not gold said to mean that someone or something may not be as good or as valuable as they first appear
All that glitters is not gold and it's a good idea to delay finalizing any important agreements, otherwise you may jeopardize a valuable relationship.