fool’s gold

noun
1
a yellow mineral found in rock, which looks like gold but is not valuable, also called iron pyrites
پیریت, طلای احمق‌ها
see also pyrites
2
something that you think is valuable or will earn you a lot of money, but which has no chance of succeeding
طلای ابلهان, طلای کاذب, آرزوهای واهی, فریب ظاهری, سراب موفقیت