![]() ![]() It was then re-cut, with the largest section of the diamond acquiring the name "Hope" when it appeared in an 1839 catalogue of a gem collection owned by a London banking family of the same name, the Hope Family of Hope & Co. The stone was cut to produce the French Blue ( Le bleu de France), which Tavernier sold to King Louis XIV of France in 1668, from whom it was eventually stolen in 1791. The earliest records of the diamond show that French gem merchant Jean-Baptiste Tavernier purchased it in 1666 as the Tavernier Blue. The stone is known as one of the Golconda diamonds. Its exceptional size has revealed new information about the formation of diamonds. It is blue in color due to trace amounts of boron. The Hope Diamond is a 45.52-carat (9.104 g) diamond originally extracted in the 17th century from the Kollur Mine in Guntur, India. ![]() ![]() The Hope Diamond in the National Museum of Natural History
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