When evaluating marble tiles, you must prioritize material density and water absorption rates. For high-traffic areas in Pakistan, ensure the marble has a water absorption rate of less than 0.5% to prevent staining from local environmental factors. Additionally, verify the Mohs hardness scale rating; a rating of 3 to 4 is standard for marble, but for commercial flooring, look for higher density variants. Ensure the thickness tolerance is within ±0.5mm to avoid uneven installation, which is a common complaint in local construction projects.