Most of the sets are made from stoneware or porcelain; product descriptions and specifications repeatedly list those two materials as the primary options.
Yes. Listings and reviews frequently note stackable, low-profile designs that save cabinet space; stackability is a common selling point in product copy and customer feedback.
Finishes include matte and glossy. Surface styles shown include embossed patterns, beaded rims, minimalist/embossed accents, and occasional marble-pattern decoration.