Quartz products such as Caesar stone and Sile stone are man made with 93% natural quartz ground up with added colours and epoxies. These products do not have pores like granite and hence do not require sealing. These products are also able to span greater unsupported lengths than granite. As they are manufactured they may be produced in colours that are consistent and solid and in some cases match the lighter colours of limestones and marbles – but with greater durability. For scratch resistance, most granites have a slight advantage over manufactured quartz surfaces.