The file 'Calcite Crystal Pencil Holder 3D Printer Model' is (stl) file type, size is 83.4KB.
This one was inspired by the dogtooth variety of calcite.
I fixed an error with one of the crystals, made the bottom flat and made it so you shouldn't need supports.
I apologize for any failed prints.
calcitepencilholder.stl | 223.7KB |