The Crystal Skull is a meticulously crafted artifact with a photorealistic dark fantasy aesthetic, featuring a human skull shape carved from translucent, slightly cloudy crystal that catches and refracts light eerily. Its surface is smooth with subtle imperfections like fine cracks and veins running through the material, suggesting age and mystical energy. The eye sockets and nasal cavity are deeply recessed, with a faint luminescent glow emanating from within, hinting at its supernatural properties.