(1) Speech is silver [silvern], (but) silence is gold [golden]. 

(2) Silence is golden, but speech is silver [silvern]. 

(3) Speech is silver (or silvern), silence is golden. 

(4) Speech is silvern while silence is golden.

(5) Speech is silvern but silence is golden.

(6) Belongs to who the songs are so silvern and shining?