Difference between diamond sharpening stone and normal whetstone

Normal whetstone will become unsmooth after you used it for some time. But this will never happen to diamond sharpening stone. Furtherly diamond sharpening stone with coarse grit could make normal whetstone become smooth.

Diamond sharpening stone will be more efficient than normal whetstone to sharpen the knife.

Normal whetstone will produce much stain than DIAMOND SHARPENING STONE.

Diamond sharpening stone won’t be broken after falling. Normal whetstone will be damaged.

Diamond sharpening stone costs more than a normal whetstone.