Moussaieff Red Diamond

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Moussaieff Red
Weight5.11 carats (1.022 g)
ColorFancy Red
CutTriangular Brilliant
Country of originBrazil
Mine of originunknown
Cut byWilliam Goldberg Diamond Corp.
Original ownerunnamed farmer
OwnerMoussaieff Jewellers Ltd.
Estimated value$20 million

The Moussaieff Red Diamond (formerly known as the Red Shield Diamond) is a diamond measuring 5.11 carats (1.022 g) with a triangular brilliant cut (sometimes called a trillion or a trilliant cut), rated in color as Fancy Red by the Gemological Institute of America. It is the world's largest known red diamond, the rarest of them all.[1]

The Moussaieff Red was discovered in the 1990s by a Brazilian farmer[1] in the Abaetezinho river in 1990, in a region known as Alto Paranaiba; the rough stone weighed 13.9 carats (2.78 g).[1] The diamond was purchased and cut by the William Goldberg Diamond Corp., where it went by its original name, the Red Shield. It was purchased in 2001 or 2002[2] by Shlomo Moussaieff, an Israeli-born jewelry dealer in London,[3] and is currently owned by Moussaieff Jewellers Ltd.

The Moussaieff Red was displayed in 2003 as part of the Smithsonian Institution's "The Splendor of Diamonds" exhibit, alongside The De Beers Millennium Star and The Heart of Eternity.[4]


  1. ^ a b c "The Splendor of Diamonds: The Moussaieff Red". Smithsonian Institution. Retrieved 29 April 2012.
  2. ^ "Moussaieff Jewelers". GemSelect. 22 July 2008. Retrieved 29 April 2012.
  3. ^ "A Man of Good Fortune". Haaretz. 10 October 2001. Retrieved 29 April 2012.
  4. ^ John M. King and James E. Shigley (Summer 2003). "An Important Exhibition of Seven Rare Gem Diamonds". Gemological Institute of America. Retrieved 26 February 2014.

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