Yes, Chinas Kowloon Play Bead Onyx can be used in a dining room. The choice of stone or material for a dining room largely depends on personal preference and the overall design aesthetic of the space. If the Kowloon Play Bead Onyx fits the desired style and complements other elements in the dining room, it can be a beautiful and unique choice. However, its important to consider the practicality of the material as well, as onyx can be more delicate and require regular maintenance compared to other stone options.