[4] American jeweller Harry Winston acquired the Nassak Diamond in 1940 in Paris, France and recut it to its present flawless 43.38 carats (8.676 g) emerald-cut shape.

[4][9] According to local legends this diamond was donated to the Trimbakeshwar Shiva Temple of Nashik by an Aristocratic Maratha family.

Later it became one of important temples in Maratha Empire[4] As priests worshiped Shiva, the diamond eventually acquired its name from its long-term proximity to Nashik.

As per the claims made by British The Baji Rao II[10] the last independent Indian Peshwa Prince, who handed over the diamond to an English colonel named J.

[4] In turn, Briggs delivered the diamond to Francis Rawdon-Hastings, the 1st Marquess of Hastings who had conducted the military operations against the Peshwa.

Despite its appearance, the diamond was sold for about 3,000 pounds (equivalent today to £277,000) to Rundell and Bridge, a British jewellery firm based in London.

[4] Six years later in 1837, the Emanuel Brothers sold the Nassak Diamond at a public sale to Robert Grosvenor, the 1st Marquess of Westminster.

[4] In 1886, the diamond was valued at between 30,000 and 40,000 pounds (today between £4,128,000 and £5,504,000), due in part to its vast gain in brilliancy from the re-cut by Rundell and Bridge.

[12] In March 1927, the Duke of Westminster used US importers Mayers, Osterwald & Muhlfeld to sell the diamond to Parisian jeweller George Mauboussin, who was living in the United States at the time.

[5] In that decision, the court determined that the unset 78.625 carats (15,725.0 mg) Nassak Diamond was not an artistic antiquity and was suitable for use in manufacture of jewellery.

"[21] In 1940, American jeweller Harry Winston acquired the Nassak Diamond in Paris, France and recut it to its present flawless 43.38 carats (8.676 g) emerald cut shape.

In 1944, Commander William Bateman Leeds Jr., millionaire son of the inventor of a tin plating process and friend of George Mauboussin, purchased the diamond for his wife, Reflexion Olive Leeds (born Olive Hamilton), and gave it to her in a set ring as a sixth anniversary present.

[23] In early April 1970, the diamond was rated one of the thirty great stones of the world and placed on display at Parke-Bernet Galleries in New York City.

[25] In December 1982, British Midland Airways purchased a McDonnell Douglas DC-9 aircraft from KLM; two months later, the plane was in the United Kingdom with the name "The Nassak Diamond".