How exactly do I export a model (it's actually just a necklace and a tag hanging on it) and keep the materials/textures/whatever on it so it imports with them into unity? It looks perfect and everything is textured in blender, I've tried exporting it as .OJB, .FBX, whatever and when I import it into unity it just loses all the textures/materials.

I read that you can manually add the textures back in unity but I don't have any "texture files" for this thing at all. All it came with is the .blend file for the necklace.