adorn the crown of an Indian Maharaja." Statistics The Centenary was completed in February 1991, weighing with its dimensions measuring 39.90 × 50.50 × 24.55 mm. The final gem had 247 facets: 164 on the pavilion and crown, and 83 on the girdle. While the stone has never been publicly appraised for value, it is known to have been insured at over US$100 million at the time of its unveiling in May 1991. The stone was loaned to the Tower of London, where it was displayed for a number of years. It is believed that De Beers no longer owns the Centenary, but the current owner is unknown. De Beers declines to comment, citing its anonymity policy. See also List of diamonds References Citations Bibliography Gems and Gemology: The Quarterly Journal of the GIA. "This Week in Gem History: The Centenary Diamond ". Retrieved 14 April 2005. Ryan Thompson's Famous Diamonds Page. "The Centenary Diamond". Retrieved 14 April 2005. Ryan Thompson's Famous Diamonds Page. "Letter from Gabi Tolkowsky, Master Diamond Cutter". Retrieved 14 April 2005. GIA Newsroom "Gabi Tolkowsky Addresses GIA Students" (Wayback Machine archive retrieved 2012-03-15-15:38). De Beers Diamonds originating in South Africa 1986 in South Africa Individual diamonds