I have created a ring with a diamond in Blender. There are two different textures; metal for the ring, glass for the diamond. When I render this everything is fine. However, when I go to animate this the meshes of move. However, when I join the meshes together, the textures darken and as a result the diamond looks almost black.
I have used YafaRay but was wondering if anybody else has had this same problem when joining meshes and rendering in Blender.
Any advice would help greatly. Thanks