Luxe Heart Locket: A Macro Marvel

{
  "generation_request": {
    "meta_data": {
      "tool": "NanoBanana Pro",
      "task_type": "photorealistic_product_macro_jewelry_campaign",
      "version": "v3.4_HEART_LOCKET_OPEN_MACRO_LUXURY",
      "priority": "highest"
    },
    "references": {
      "reference_image_1": "UPLOAD_REFERENCE_IMAGE (PRODUCT + COMPOSITION LOCK)",
      "insert_photo_reference": "UPLOAD_COUPLE_PHOTO (OPTIONAL: REPLACE THE PICTURE INSIDE LOCKET)"
    },
    "output_settings": {
      "aspect_ratio": "1:1",
      "orientation": "square",
      "resolution": "ultra_high_res",
      "render_style": "ultra_photoreal_luxury_product_editorial",
      "sharpness": "macro_tack_sharp",
      "film_grain": "none_or_minimal",
      "color_grade": "clean_warm_luxury_true_to_life"
    },
    "creative_prompt": {
      "scene_summary": "Ultra-photoreal luxury jewelry product shot: a gold heart-shaped locket necklace photographed in macro detail on a black fabric background. The locket is open, showing a small photo inside the top half. The gold finish is highly polished with realistic specular highlights, micro-scratches, and accurate reflections. The chain is visible and neatly draped above the pendant.\n\nThe inner photo: a small black-and-white candid couple portrait (if an insert photo reference is provided, use that exact image; otherwise generate a tasteful B&W couple photo). The photo must fit naturally behind the locket window with correct perspective, slight glass reflection, and realistic paper texture.\n\nThe open bottom half of the locket shows a clean, reflective gold interior with hinge details and realistic depth. Fabric background is a matte black knit/cotton texture with visible weave, subtle lint fibers, and soft folds.\n\nLighting: premium product lighting with a soft key and gentle fill; warm highlights on gold; controlled shadows; no harsh glare blowing out details. Camera: macro lens look with shallow depth of field—locket and photo sharp, edges gently fall off. Mood: elegant, intimate, gift-ready, high-end campaign aesthetic."
    },
    "hard_constraints": [
      "Single product only: one gold heart locket necklace, open.",
      "Photoreal macro detail: metal reflections, hinge, chain, fabric weave.",
      "Photo inside locket must look printed and physically placed (not floating).",
      "No readable text, no logos, no watermark.",
      "No extra jewelry items, no hands."
    ],
    "negative_prompt": [
      "text, logos, watermark",
      "extra jewelry",
      "hands or people holding it",
      "cartoon, CGI",
      "plastic-looking gold",
      "blown highlights",
      "blurry photo inside locket",
      "warped locket shape",
      "low resolution"
    ]
  }
}