Create a hyper-realistic 3D model of Athena, goddess of wisdom, in an ancient marble sculpture. She stands tall with a serene yet commanding expression, wearing a finely draped chiton and a detailed Aegis shield. Her helmet, adorned with a serpent motif, gleams subtly. In one hand, she holds a spear, and the other rests by her side, poised and powerful. Intricate details, from the folds of her robes to the lifelike texture of her hair and the aged surface of the marble, evoke timeless grace. Soft, focused lighting highlights every curve, enhancing the stoic, divine presence. 8K resolution, high realism, and classical beauty.