High Quality Content by WIKIPEDIA articles! A diamond blade is a saw blade which has diamonds fixed on the blade`s base to use the diamonds to cut hard or abrasive materials. There are many types of diamond blades, and they have been applied in many industries, for example, construction industry to cut stone, concrete, asphalt, bricks, coal balls, glass and ceramics, IT industry to cut semiconductor materials, and gem industry to cut gem stones including diamonds.