Create an ultra-realistic 4K image in a 1:1 square format featuring the inserted necklace displayed exactly as it is in real life, with 100% accurate shape, size, proportions, color, material, and every visible detail perfectly sharp, correctly rendered, and naturally integrated. Present the necklace elegantly draped around a matte mannequin bust positioned at the center of the frame, with a smooth, finely textured surface in a deep brownish-gray tone. The mannequin should stand on a glossy glass counter that softly reflects light and the surrounding objects. The background must feature a warm, softly blurred jewelry store interior with multiple illuminated shelves displaying gold necklaces, creating a luxurious and inviting depth of field. Lighting should come from the upper front-left direction, casting natural, diffused highlights on the necklace and gentle shadows toward the right and beneath the bust. Maintain a golden, warm color atmosphere with soft reflections and balanced contrast that emphasize the metallic shine of the necklace and the tactile texture of the bust. The overall mood should feel premium, elegant, and realistic, with every material rendered with lifelike precision, accurate reflections, and smooth tonal transitions.