Lot 258. The Rajah Diamond. Estimate CHF2,700,000 – CHF4,500,000 ($3,078,915 - $5,131,526). Price realised CHF 3,637,000. Photo Christie's Image Ltd 2014 

The old-mine brilliant-cut diamond, weighing approximately 26.14 carats, set in a platinum mount, ring size 7¼. 

Accompanied by report no. 10157235 dated 27 December 2013 from the GIA Gemological Institute of America stating that the diamond is D colour, VS2 clarity, a working diagram indicating that the clarity of the diamond is potentially Internally Flawless and a Diamond Type Classification letter stating that the diamond is Type IIA

Also accompanied by a hardbound monograph from the GIA Gemological Institute of America, featuring additional photography, data collection charts and gemological research, attesting of the prestige of the Rajah diamond  

Provenance: Christie's Geneva, 20 November 1997, lot 914
Private collection
Mrs Isabella Stewart Gardner (1840-1924)
Tiffany & Co
Mrs Mary Jane Sexton Morgan (d. 1885) 

Literature: L. Copeland and J. Martin, Diamonds... Famous, Notable and Unique, Gemological Institute of America, 1974, p. 172
R. Gaal, The Diamond Dictionnary, Gemological Institute of America, 1977, p. 240
L. Tharp, Mrs Jack, Little Brown, 1965, p. 111
J. Loring, Tiffany Diamonds, Harry N. Abrams, 2005, p. 134 

Christie's. GENEVA MAGNIFICENT JEWELS, 14 May 2014. Geneva