Granite.
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Concrete, tile, marble. granite, glass.
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Polished concrete flooring is usually referred to as Indian Patent Stone (or IPS). It is generally done with cast-in-situ PCC(1:2:4) with coarse aggregate as 6-10mm granite chips. PCC(1:2:4) is a well mixed combination of 1 part Ordinary Portland Cement (OPC), 2 parts fine aggregate (sand) and 4 parts coarse aggregate (granite chips) with enough water to a workable consistency. IPS is laid into alternate panels, generally staggered, of not more than 9m2 each to avoid shrinkage cracks on drying.
The answer is in the question. Natural granite and engineered granite are like steak and beefburger. However, engineered granite is probably more practical and cheaper in the long run. See link.
We use two component epoxy when we need to fix any stone.