A high-quality oil painting in the style of Caravaggio, depicting a fresh bunch of Dunhuang grapes with vibrant green leaves on a pure white background. The grapes are plump and glossy, with deep purple and green hues, and the leaves are lush and vibrant, showing signs of freshness. The painting features dramatic chiaroscuro lighting, with strong contrasts between light and shadow, rich textures, and a realistic, natural look. The colors are inspired by Dunhuang murals, featuring soft earthy tones like terracotta, ochre, and muted purple for the grapes, and vibrant green for the leaves, with subtle highlights and shadows, highly detailed, 8k resolution.