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    Sale 1418

    Geneva Magnificent Jewels

    15 November 2016, Geneva

  • Lot 178

    THE STAR OF SIERRA LEONE VI

    A DIAMOND RING, BY HARRY WINSTON

    Price Realised  

    Estimate

    THE STAR OF SIERRA LEONE VI

    A DIAMOND RING, BY HARRY WINSTON
    Set with a pear-shaped diamond, weighing approximately 21.69 carats, to the baguette-cut diamond tapered shoulders, ring size 5 ½, mounted in platinum
    Signed Winston for Harry Winston
    Accompanied by report no. 2175703908 dated 28 June 2016 from the GIA Gemological Institute of America stating that the 21.69 carat diamond is D colour, VVS2 clarity, a Diamond Type Classification letter stating that the diamond has been determined to be Type IIa, and a letter of authentication noting the re-cut of the 22.27 carat diamond (known as the Star of Sierra Leone VI) to 21.69 carats.

    Further accompanied by report no. 1251615 dated 29 January 1981 from the GIA Gemological Institute of America stating that the 21.69 carat diamond is D colour, VVS2 clarity.
    Copy of report no. NY674663 dated 12 November 1973 from the GIA Gemological Institute of America stating that the diamond, weighing then 22.27 carats, is D colour, VVS1 clarity.
    Copy of invoice dated 26 December 1973 and copy of insurance valuation dated 30 March 1983, both from Harry Winston.


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    Pre-Lot Text

    Should you wish to bid on this lot, you will be required to obtain a High Value Paddle.


    Post Lot Text

    The Star of Sierra Leone was discovered on Valentine’s Day 1972. The rough diamond weighed 968.9 carats, approximately 195 grams. It was discovered 320 km east of Freetown, the capital of Sierra Leone.
    At 968.9 carats, it is the fourth largest gem quality diamond ever found; behind the Cullinan, the Excelsior and the Lesedi La Rona. However it is the largest alluvial diamond ever found. Alluvial diamonds lay in river beds or ocean floors, where they are discovered after millions of years of natural erosion.
    De Beers handled the sale of the Star of Sierra Leone rough and it became the property of Harry Winston on 3rd October 1972; reported to be sold for just under $2.5 million. The rough was exhibited around the world, with proceeds going to various charities in Sierra Leone.
    The Star of Sierra Leone was then studied for several months in New York. Harry Winston wanted one big exceptional gem: an emerald-cut diamond weighing 143.20 carats. However, upon completion, this exceptional gem was discovered to be flawed. Mr Winston decided to have this stone recut into seven gems. In total, the rough of the Star of Sierra Leone produced seventeen gems, for a total of 238.48 carats. Thirteen of them were flawless. The last one of the stones was sold in 1975.
    On 26th December 1973 the family of the current owner acquires the 22.27 carat Star of Sierra Leone VI from Harry Winston. Between 1973 and 1981, the current owner asks Harry Winston to re-cut the stone, in order to remove a feather inclusion. The new recorded weight is 21.69 carats.
    We are delighted to offer the Star of Sierra Leone VI, an exceptional D colour pear-shaped diamond weighing 21.69 carats, which has remained in the family of the vendor from 1973 until today.