Two of the largest yellow diamonds always offered for sale will be hitting the auction block in Geneva on Wednesday.
The double of rocks, called the Donnersmarck Diamonds, total more than 185 carats and ages belonged to French nobility.
They are part of the collection of La Paiva, a 19th-century French courtesan deny b decreased countess, who was well known for her vast collection of fine jewels.
“Figure out Guido [Henckel] von Donnersmarck bought these magnificent diamonds in 1882 for the true-love of his life, La Paiva,” said Brett O’Connor of Sotheby’s.
That nobles provenance, plus their size and unique hue, has Sotheby’s projecting the conjure up intense yellow diamonds will fetch anywhere from $9 million to $14 million.
The finds are some of the biggest and brightest in their classification, with the larger of the two weighing in at 102.54 carats and the smaller at 82.47 carats.
“They’re exceptionally charming,” said O’Connor. “And the love story connected with them is noticeably unique.”
The stones will be showcased among various other flowers of notable historic provenance at Sotheby’s Magnificent Jewels and Noble Marvels sale in Geneva on Wednesday.
Watch an all new episode of “Secret Lives of the Wonderful Rich” Thursday at 10 p.m. ET/PT on CNBC.
Correction: An earlier version of the news incorrectly identified the century in which La Paiva lived.