Wanted to do a pearl texture - haven't found a nice one predefined yet. A perfect object to test pearl textures would be a pearly shell like Turbinidae or an Abalone.
Had none ready so I fell back to my beloved Gyroid shape - dressing it up like one of those Californian Red Abalones.
Bit weird but I like it - cheers
Meshing done in Meshlab & Blender, texturing done in Blender (all procedural trextures except tag), rendered in Blender Internal renderer.