Most natural stone floors with a high gloss polish that were installed in high traffic areas like kitchens, hallway, most used bathrooms, home main entry will develop hundreds if not thousands of tiny hard to see scratches that over time will turn your beautiful floor kind of dull in sections. You can slow dow this process by placing outdoors mats made of HeavyDuty Coir (as a sample) these do well collecting granny-sandy like debris from shoes. A professional floor restoration will be required to get your floor back to a like new condition.