Prompt: a large bone, likely from an animal, resting on a surface with a marble-like appearance. The bone is predominantly off-white with variations in color, including darker areas that suggest natural staining or perhaps age-related discoloration. The texture of the bone is rough with visible pores and lines that give it a realistic and organic look. One end of the bone is broader and shows signs of wear or perhaps the natural contours of the joint it once formed. The other end narrows slightly and seems to be cut or broken cleanly. The overall shape and size suggest it could be a femur or a similar large bone from a sizeable mammal. The surface on which the bone rests has a patterned design, with swirls of grey and white, resembling a polished stone or a marble tabletop.