Create a low-poly 3D model of an ancient, intricately carved stone tablet inspired by the Indira civilization. The tablet is rectangular with worn, rough edges, and its surface is covered in symmetrical, geometric patterns and glyph-like carvings. Some carvings glow faintly to suggest hidden holographic effects. Render it in earthy tones like gray stone with hints of mossy green. Ensure bold, clear edges and simplified geometry with intricate surface details, perfect for 3D modeling reference.