The largest gold bar in the world stands at 250 kg. The unique gold bar measures at the base 45.5 cm × 22.5 cm and 17 cm high with 5 degree draft angle.
The largest gold bar in the world was manufactured by the Mitsubishi Materials Corporation. Mitsubishi Materials Corporation is a subsidiary of Mitsubishi. It went on display at the Toi Gold Museum on July 11, 2005. Its gold content was valued in 2005 at 400 million yen (approximately US$3,684,000 at the time).
As of 29 October 2014, it is worth approximately US$10.33MM, not accounting for the premium associated with being the world’s largest gold bar.
Here are some images of the The largest gold bar in the world.