His personal wealth was said to be stored in the underground chambers of King Kothi Palace (Hyderabad) where he spent most of his life.
Among his treasure was the famed Nizam jewellery (173 magnificent pieces) studded with rubies, diamonds, pearls, sapphires and other precious stones beautifully embedded in gold and silver.
When Hyderabad merged into the Indian union in 1948, the Government of India was only able to acquire a fraction of the Rs 5000 cr worth of jewellery. No one knows what happened to the rest of his treasure. He built the Hyderabad House in Delhi, now used for diplomatic meetings by the Government of India.