Since my references work predominantly with textures and oxidizing I experimented with a few myself.

frost texture made with a drill bit (left), round hammer texture (right)

straight hammer texture
 

prepared piece of silver with bitchemen, ready for etching.
 

my own texture made after etching.
 

blackened after etching.
 

blackening taken of surface on (left) and inside groves on (right).
 

one side clean silver the other blackened.