Create a highly realistic 3D model of a single olive. The olive should have an organic, asymmetrical shape with subtle surface wrinkles and natural imperfections. Use a deep green color with slight color variations, including lighter green highlights and darker specks. The surface should have a soft, slightly glossy sheen, as if lightly coated with olive oil. Include fine surface texture details visible up close. The model should be photorealistic, suitable for close-up rendering, with clean topology and high-resolution PBR textures (albedo, roughness, normal, and specular maps). No stem, isolated object, neutral background.