A rare piece of India’s royal heritage, ‘The Golconda Blue,’ a 23.24-carat vivid blue diamond, will be auctioned at Christie's “Magnificent Jewels” sale in Geneva on May 14. Once owned by the Maharajas of Indore and Baroda, this iconic diamond is estimated to fetch between USD 35 to 50 million (Rs 300 to 430 crore). Known for its exceptional color, size, and royal legacy, the diamond’s origins trace back to the famed Golconda mines in Telangana. Its fascinating journey includes royal collections