The descendants of the 17th-century artisans who worked on the Taj Mahal still make ... is the art of marble inlay, which involves carving out marble slabs and inserting precious and semiprecious ...

are rust stains from iron fixtures that hold the marble slabs in place. Marisa Laurenzi Tabasso, an Italian chemist and conservation scientist, has studied the Taj Mahal on behalf of international ...