This was purchased in China by my mother. I don't know the exact type of stone, but I believe it's a natural stone. As it's old, I'm not sure if the scratches and stains are due to age or are characteristics of the stone itself. Please judge from the photos. All of them have intricate carvings. These have been stored at home, so please refrain from purchasing if you are sensitive to such things. - Shape: Square - Color: Gray, Red - Dimensions: Please check the photos as they vary. Thank you for looking.