No one knows exactly for sure what Mine it was from, however it is believed to be from the Kollur mine in Golconda, India.
According to its Wikipedia page:"The first volcanic pipe found in the Lac de Gras region was the Point Lake kimberlite, discovered by Chuck Fipke and Stewart Blusson who had been prospecting in the region for almost ten years, having found kimberlite indicator minerals as early as 1985."
Diamonds are typically found in kimberlite pipes or alluvial deposits, with major diamond-producing countries including Botswana, Russia, Canada, and Australia. These natural deposits have undergone complex geological processes over millions of years to form diamonds.
Although alluvial diamonds had been found in India as early as 6,000 BC, and in Brazil beginning in the 1700s, the first mine opened in the 1870s, after according to Wikipedia: "... the discovery of the Diamond Fields in South Africa."(Again, from Wikipedia:"Alluvium -- from the Latin, alluvius, from alluere, 'to wash against' -- is loose, unconsolidated -- not cemented together into a solid rock -- soil or sediments, eroded, deposited, and reshaped by water in some form in a non-marine setting.")
Diamond mining started in India around the 4th century BC. However, modern industrial diamond mining began in the late 19th century in South Africa after the discovery of diamond deposits in the region.
The Cullinan at more than 3,000 carats, remains the largest raw diamond ever found.
According to Wikipedia: "The Cullinan diamond was found by Frederick Wells, surface manager of the Premier Diamond Mining Company in Cullinan, on January 26, 1905."
From Wikipedia: "The Cullinan diamond is the largest rough gem-quality diamond ever found, at 3,106.75 carats (621.35 g)."
The biggest diamond found to date -- 3,000+ carats -- is named Cullinan, named after Sir Thomas Cullinan, the owner of the Premier Mine, where the stone was found.
Gauteng, South Africa
The Cullinan, found in the early 1900s, was gifted to Queen Victoria. You can read more about its disposition, below.
The Cullinan was gifted to King Edward VII on his birthday by the Transvaal government which purchased it from the Premier Diamond Mining company in Cullinan, South Africa. You can read more about its continued history, below.
The Cullinan is the largest diamond ever found. It is 3,106.75 carats. It was found near Pretoria in South Africa.
Mother Nature made the Cullinan diamond, which was discovered by a human in 1905.
Thomas Cullinan - diamond magnate - died in 1936.
Thomas Cullinan - diamond magnate - was born in 1862.
The Cullinan was gifted to the monarchy shortly after it was found more than 100 years ago. It is still in the possession of the crown.