The Record-Setting Golden Jubilee Diamond

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At 545.65 carats, the brown-coloured Golden Jubilee Diamond holds the record as the largest cut-and-faceted diamond in the world.   The stone was first found in the Premier Mine in the Guateng Province of South Africa in 1985.   An ironic location as this mine is most famous for being the world’s largest source of blue diamonds.

Original owners De Beers hired famed sixth-generation diamond cutter Gabi Tolkowsky to take it from its 755 carat rough form into a polished diamond.   Working for two years in a vibration-free underground room, Tolkowsky transformed it into it’s current form, a fire rose cushion cut diamond.

The stone, originally called The Unnamed Brown, was sold to a group of Thai businessmen led by Henry Ho, Executive Director of Bangkok’s Jewelry Trade Centre.   The diamond was then presented to King Bhumibol Adulyadej of Thailand in 1997, the 50th anniversary of his reign (hence the diamond’s name).   Original plans for the diamond included putting it in a golden sceptre or the royal seal but none of these came to fruition.   The stone currently resides in the Royal Thai Palace as part of the crown jewels.

The World’s Top 5 Largest Diamonds

  1. The Golden Jubilee
  2. The Cullinan I (the record holder from 1905 to 1985)
  3. The Incomparable
  4. The Cullinan II (like the Cullinan I, it is part of the Cullinan diamond-the largest gem quality diamond ever found)
  5. The Spirit Of Grisogono

The current value of the Golden Jubilee Diamond is listed at between $4 and $12 million.   However, at auction, no one could really guess at what the diamond would sell at.   As we have seen at numerous auctions this year, the per carat price for colour diamonds keeps going up.

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