1)hardness
Mable and Granite are significantly different in hardness, therefore the resin diamond matrix needs to be significantly different. There is no universal pad that performs well on all materials. Marble is soft in relation to Granite, therefore a hard resin is needed prolong the life of the pad and keep fresh diamonds working longer. If the resin is too soft the material will work against the resin and quickly wear out the pad. Granite is very hard compared to marble thus it needs a softer resin, hard resin on hard material will result in the pad skating on the material, the pad needs to slowly wear to expose new diamonds.
2)Diamond content
Diamond content is also a driving factor in how our pads perform, cheaper pads contain less diamonds resulting in slower results, faster wear and diminished performance. that is why you should choose high diamond content pad.