Construction Materials and Costs of Taj Mahal, Agra
The turquoise was from Tibet and the Lapis lazuli from Afghanistan, while the sapphire came from Sri Lanka and the carnelian from Arabia. In all, 28 types of precious and semi-precious stones were inlaid into the white marble. The total cost of the Taj Mahal's construction was about 50 million rupees. At that time, 1 gram of gold was sold for about 1.4 rupees. Based on the October