Juventud divino tesoro

[ROBINDESBOIS]

In English please ?

[Rusty]

Youth, divine treasure

[irmamar]

But this is not an idiom, but a poem by Rubén Darío:

Juventud, divino tesoro,
¡ya te vas para no volver!
Cuando quiero llorar, no lloro...
y a veces lloro sin querer...

...

:rose:

[ROBINDESBOIS]

Thank you. I din´t know it was such a calque.