Marble TV walls offer natural beauty but require careful inspection. This guide covers key checks for seams, flatness, pattern matching, and edges. Ensure uniform seam widths (1-3mm), smooth, full grouting, and no more than 0.5mm height difference between slabs. Verify wall flatness and verticality, and check for seamless pattern alignment. Inspect all edges for chips or damage, and ensure finishing details like trim and cutouts are precise and smooth. Thorough inspection under various lighting conditions is crucial for a flawless, long-lasting installation.