DiamondFinish 

Hard-wearing finish 
DiamondFinish ensures that your cooktop looks like new for longer. The special ceramic glass coating significantly reduces scratches. DiamondFinish is more than twice as hard-wearing as conventional ceramic glass surfaces. There are 95 % fewer scratches due to sand and 70 % fewer scratches due to abrasive sponges. At the same time, the high-end gloss gives your cooktop an elegant appeal. 
Images serve as examples to illustrate the product benefit. Actual feature may vary per model.