Classic Gold & Platinum Ring Render

I need a photorealistic CGI render of a classic-style ring, shown in both polished yellow gold and cool platinum. The final image must look indistinguishable from a studio photograph—think accurate reflections, soft shadows, and realistic metal micro-scratches that sell the material.

Please work from my sketch or CAD file (STEP/OBJ) and build or refine the model as needed, set up convincing studio lighting, assign physically-correct shaders, and deliver:

• 4K PNG on transparent background
• One high-resolution lifestyle shot on a neutral surface
• Native scene file (Blender, 3ds Max + V-Ray, KeyShot, or similar)

The render should match classic proportions: rounded comfort band, subtle taper toward the setting, and clean edges—no modern or vintage embellishments. Consistency between the gold and platinum versions is essential; only the alloy should change, not the geometry or camera angle.

I will sign off once metal color tones, reflections, and overall realism match high-end catalog standards. Looking forward to seeing the ring sparkle.