Diamond blades are cutting tools that feature a metal core with a layer of diamond segments on the edge. These segments are made from industrial-grade diamonds, which provide exceptional hardness and durability, making them ideal for cutting through tough materials like concrete, stone, and asphalt. The design of diamond blades allows for efficient cutting with minimal friction and heat generation. They come in various types, including wet blades for use with water to reduce dust and cool the blade, and dry blades for cutting without water. This versatility makes them popular in construction and masonry applications.