ХОРОША МАША, ДА НЕ НАША

The woman is beautiful or the thing is good, and one would like to have them but he cannot. See Хоть хорош пирог, да в чужих руках (X)

Var.:Хорош кус, да не для наших уст

Cf:It is good fish if it were but caught (Br.). You can look, but you cannot touch (Am.)