All is not gold that glitters.

闪光的东西不一定都是金子。

《新英汉大辞典》

All that glitters is not gold, but it must have free electrons.

并非所有发光的都是金子，但是要发光必须有自由电子。

youdao

But I also tell my children that all that glitters is not gold.

但我还告诉孩子们不是所有发光的东西都是金子。

youdao

Continue through the winding lanes to the wooden-latticed arcades of the Gold Souq where all that glitters is not just gold.

BBC: A perfect day in Dubai