This crystal of liquid evil was forged in the deep pits of blender, infused with RGB and Vornoi texture, and polished by Cycles of demons. If you download the .obj file, make sure to download the .mtl too. If you open just the .obj, it will look like a lump, the material pulls off the effect. If you open the .blend file, you are ready to go. The HDRI I used is from HDRI Haven, but you can change that in the .blend file. Also, in the .blend file, you can change the geometry to your heart's content. Have fun!