ruby gemstone 3d model

Create an ultra-realistic macro photograph of a natural ruby gemstone. The ruby should display a deep vivid red color with slight pink undertones, showing natural inclusions and fine silk-like internal structures typical of real rubies. Emphasize the faceted cut with sharp edges and a highly polished surface. Light should pass through the stone, creating a warm internal glow, strong refraction, and subtle red caustic patterns on the surface below. Capture detailed internal reflections that make the ruby appear as if it is glowing from within. Place the gemstone on a dark matte background to enhance the richness of the red color. Use dramatic studio lighting from one side to create depth, realistic reflections, and sparkle. Shot as if with a professional DSLR macro lens, high dynamic range, photorealistic, 8k detail, sharp focus, cinematic lighting, realistic shadows.