3D Model: A Modern, Three-dimensional Cube Made Of Transparent, Glossy Glass With Subtle Reflections And Refractions. The Cube Is Tilted To Show Three Faces, And Each Face Displays A Bold, Stylized Letter "D" Embedded Or Etched Onto The Surface. The Letters Are Sleek And Sans-serif, Illuminated Softly As If Glowing From Within The Cube. The Overall Design Should Convey A Futuristic And High-tech Aesthetic, With Smooth Lighting, Crisp Edges, And A Dramatic Dark Gradient Background To Enhance The Glass Effect. Render In High Contrast, With Depth And Realistic Shading.