They are from the Baroque Grandeur model. Baroque Grandeur is not a required product but the Grandeur Dinner Service does support this model through the inclusion of the extra preload presets.
The DAZ Studio materials included are for DAZ Studio 3+ only due to the use of UberSurface shaders. The product can be used in earlier versions by manually setting up the materials. (Baroque Grandeur is available here).
