Ultra-realistic 3D Render Depicting Four Gemstone Dice

Create an ultra-realistic 3D render depicting four gemstone dice positioned closely together in a 2x2 grid, with all dice in contact. Display the arrangement from an isometric perspective. One die is emerald green with golden numerals etched onto its faces. The remaining dice are ruby red, sapphire blue, and pearl white. A carved dragon design appears on one die, while the other two show the numbers "7" and "3." Use polished gemstone textures, smooth edges, soft shadows, and a clean slate-gray background.