Realistic diamond shader: Amethyst, Almaz, Sapphire, Topaz

The shader includes four carefully tuned gemstone presets: Amethyst, Almaz (Diamond), Sapphire, and Topaz, each calibrated to match real-world optical properties. There are 2 options for each gemstone: With particle system sparkles and without sparkles. Key Features: Physically-based refraction and reflection for true gemstone realism. High-quality sparkles option. Supports HDR lighting and bloom for cinematic results. Works with real-time lights and environment reflections. Highly customizable parameters — color, refraction (distortion) index, absorption, brightness, and clarity. Easy to use, just drag & drop and add your scene cubemap reflection.