Marble Tile Substance

When watching the first season of Star Trek Discovery there was a couple of scenes on the Klingon ship that had this awesome dark brown marble with turquoise specks, so I wanted to create something similar and with a tone of a fictional pattern that would be set in either a fantasy or scifi world. As far as the diamond pattern goes, I came up with the pattern by just messing around with shapes and seeing what I liked. The first image was my main idea for this marble but I also created the green marble and other slight spinoffs below that one. Hope you enjoy!