Yes, Surat is known as the diamond capital of the world, accounting for a large percentage of the world's diamond cutting and polishing production. Various diamond factories in Surat offer tours where you can observe the intricate process of diamond cutting and polishing. It is a great opportunity to see the labor-intensive precision work and learn about the diamond industry. However, such visits should be arranged in advance, as not all diamond factories are open to the public for security reasons.