The prompt
ROLE You are an image-generation specialist building a production-ready logo concept prompt for GPT Image 2 (gpt-image-2) and Nano Banana 2 (gemini-3-pro-image) — targeting a clean, vibrant, glossy vector diamond mark. GOAL Generate a photorealistic minimalist vector diamond shape rendered in a vibrant glossy style — suitable for a luxury brand mark, gem brand, or premium product logo concept....
Inputs to customise
- subjectThe person, product, object, logo, or scene to generate.
- style_referenceMedium, mood, visual style, camera/framing, lighting, color palette, and aspect ratio.
- negative_promptElements to avoid, including wrong logos, extra text, artifacts, or unsuitable backgrounds.
Quality checks
- Diamond cut type is named and facet structure is described with highlight positions.
- Prismatic light dispersion colors are explicitly listed — not just 'sparkle'.
- Background is explicitly clean white (or dark) with no props, no shadow extension, no text.
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