Billed as only the third yellow diamond larger than 200 carats ever to appear at auction, "The Yellow Rose" could fetch $4.4 million or more as the top lot of Christie's Magnificent Jewels sale at the Four Seasons Hotel des Bergues in Geneva on May 15.

The unmounted 202.18-carat gem boasts excellent polish and symmetry and a Fancy Intense Yellow color. Sourced in South Africa, the pear-shaped modified brilliant cut gem carries a clarity grade of SI1.

Here are some more auction highlights:

Lot 32 is a platinum pendant highlighting a pear brilliant-cut diamond of 30.02 carats. The D-color, internally flawless gem is expected to yield $1.7 million to $2.8 million.

A pair of natural pearl sautoirs are included in Lot 99. The longest of the two has 171 round to oval and button shaped natural pearls ranging in size from 12.55 to 4.45 mm. The shorter strand holds 182 round to roundish and button shaped natural pearls ranging from 10.75 to 4.10 mm. The pre-sale estimate for the pair is $1.7 million to $2.5 million.

The Taffin Diamond Ring, Lot 66, is projected to sell in the range of $1.3 million to $2 million. Set in platinum, the 23.15-carat emerald-cut diamond is rated D-flawless.

Beautifully matched round diamonds weighing 30.03 and 30.02 carats, respectively, are mounted as platinum earrings that should earn from $1.1 million to $1.6 million. The diamonds of Lot 72 each carry a color grade of K and a clarity grade of VS2.

Lot 51 is a Cartier-designed ring spotlighting a 20.02-carat pear brilliant-cut diamond. Christie's believes the D-flawless diamond will draw bids in the range of $1 million to $1.7 million.

Credits: Images courtesy of Christie's.