A crack lava cube with glowing seam, the intensity of the glow could be adjusted. Made in high res using Zbrush and made into low res using mayaTexture by substance painter
STL (Stereolithography, filesize: 84.7 KB), OBJ (OBJ, filesize: 174 KB), FBX (Autodesk FBX, filesize: 93.5 KB)