Princess Diana's 'Swan Lake Suite' to be auctioned at Guernsey's in New York City.

Pearl lovers are in for a real treat on September 24th — the late Princess Diana's infamous 'Swan Lake' Necklace is up for auction at Guernsey's Auction House in New York City.

Comprised of five perfectly matched South Sea Pearls and a whopping 53.02 carats of marquise and brilliant cut diamonds, the 'Swan Lake' Necklace is named after Diana's iconic appearance at the Royal Albert Hall performance of Swan Lake on June 3, 1997. This was the Princess' final public appearance before her tragic death only a few short months later.

The pearl and diamond necklace, created by Crown Jeweler Garrard specifically for Princess Diana, is part of a suite, the 'Swan Lake Suite,' which also includes a stunning pair of matching pearl and diamond earrings. Princess Diana never had the chance to wear, or even see, the earrings as they had not been completed in time for the performance of Swan Lake.

The 'Swan Lake Suite' is valued between $150,000 and $250,000.

Update: the 'Swan Lake Suite' sold for $500,000 to an American couple. The suite had previously been owned by a Ukrainian couple who purchased the set in 1990 for $100,000 at a Guernsey's New York auction.