The original inspiration for this model came from Scan The World. I took the picture of an actual triceratops skull fossil, and converted it into a 1-centimeter-thick print using Hueforge. The result is a texture that feels and looks a lot like stone, even though only three colors were used: black, skin-beige, and white.
While the print is a relatively small one, you can increase the X and Y axes size. Just keep the Z axis value constant so it doesn't mess with the layer coloring.
Print at 100% infill with a layer height of 0.08mm with a base layer of 0.16mm
Filaments Used:
PLA Black
PLA+ Skin
PLA White
Swap Instructions:
Start with Black
At layer #15 (1.28mm) swap to Skin
At layer #44 (3.6mm) swap to Black
At layer #71 (5.76mm) swap to Skin
At layer #87 (7.04mm) swap to White for the rest.