Indicación de imagen de sujeto de piedra fotorrealista

A photorealistic image of a stone shaped like the [SUBJECT]. The stone should have a variety of natural stone colors such as shades of gray, brown, adding to its authenticity. The texture should include detailed imperfections like small cracks, crevices, and variations in color typical of real stones. The [SUBJECT] shape should be clearly defined with smooth and slightly rounded edges. The surface of the stone should have a mix of rough and smooth areas, enhancing its realistic feel. The composition should be a three-quarter view angle, showing the depth and form of the stone. Lighting should be soft but directional, creating gentle shadows and highlights that enhance the three-dimensional quality of the stone. The background should be a simple, neutral surface, like a lightly textured beige or gray, to keep the focus on the stone [SUBJECT].