The World's Most Expensive Home Products

Pietra Firma
Approximately $1 million per 10 sq ft

These tiles from the Italian company Pietra Firma are handcrafted using the priciest of pricey materials, including black onyx with mother of pearl insets and—oh yeah—diamonds. Lots of diamonds. Of course, precious stones would be expected when one is paying around a hundred thousand dollars for every square foot of flooring. pietrafirm.com