I'm looking for a database of very basic crystal models for all the various types - triclinic, monoclinic, orthorhombic, tetragonal, rhombohedral, hexagonal, and cubic.
A basic example would be a CAD file for a cube, to represent the cubic structure. I don't want like a packing model which shows the individual atoms because I'm trying to represent macroscopic crystals.
Any ideas where I could find what I'm looking for? Not a 3D graphic designer.