https://phys.org/news/2018-08-taj-mahal.html

The Taj was constructed of translucent white marble, brought to Agra from the north-west Indian region of Rajasthan. It was then inlaid with semiprecious stones, including jasper, jade, turquoise, lapis lazuli, sapphire and carnelian. The whole riverside complex, including the gardens and surrounding sandstone walls, was finished in 1653.

A mausoleum in need of new life