黒いダイヤってこれ？

1girl, solo, blonde hair, short hair, bob hair, blue eyes, beautiful detailed eyes, {{{{{{{hair bow}}}}}}}, {{{{{{{red bow}}}}}}}, large bow, teenage girl, small breasts, surprised expression, slightly open mouth, raised eyebrows, confused look, furrowed brow, white school uniform, sailor collar, blue necktie, pleated skirt, white knee socks, brown loafers, standing, holding coal, {{{{{black coal}}}}}, both hands cupping object, looking down at hands, tilted head slightly, arms extended forward, feet shoulder width apart, indoor classroom, wooden desks, chalkboard background, window with afternoon sunlight, dust motes in air, school interior, wooden floor, educational posters on walls, bright natural lighting, clean environment, anime style, cel shading, soft colors, detailed shading, smooth lineart, glossy hair texture, sparkling eyes, innocent facial features, youthful appearance, school atmosphere, detailed fabric folds, crisp uniform details, , very aesthetic, masterpiece, no text