I kept putting drops of alcohol ink on top of the previous drop, just to see what would happen. This picture doesn’t do it justice. The black parts are so shiny you’d think they are still wet.
This is the same ink as the previous alcohol ink posts, but on photo paper. The ink just doesn’t spread as well. I used a metallic gold one on this, and it didn’t spread at all. I tipped the paper to make it run. Not real enthused about the gold.