https://youtu.be/fKDDWtkhfOU https://youtu.be/5qETZidp5BU a blend model showing the different types of fractures with their names. The material is a single diffuse and normal map based on non overlapping UVs. The formats obj, fbx, with applied uv mapped textures have also been included in the downloads along with stl & 3mf.
https://www.fab.com/listings/5aa04e96-e904-4e2b-97e1-4bf18c801b43