Combinations with rock materials

I started to experiment with different types of Rock textures with the two cerium type metals.

I mixed the two materials together by changing the layer type to 'Overlay' or 'Vivid light'. The mix of the two blend quite well gives a shiny rock look, I like the reflectional light of the metal and the cracks, scratches from the rock. I like the look of no. 1 and 2 of the first page. I will experiment with those two further.