Editor’s Note
This article details the record-breaking auction of the “Bleu Royal” diamond in Geneva, exploring the unique qualities that contribute to the extraordinary value of such rare gems.

Christie’s auctioned a diamond of superlatives in Geneva.
According to diamond expert and goldsmith Yves Betschman, the value of a multi-carat diamond is fundamentally determined by its rarity:
According to Christie’s spokesperson, Alexandra Kindermann, red and blue diamonds are the most sought-after colored diamonds. At 17.61 carats, the Bleu Royal is the largest blue diamond ever offered at auction, which also explains its price. Furthermore, it is flawless and possesses the highest possible color saturation.

According to Betschman, such diamonds are often purchased by Asian buyers.
The uniqueness of a gemstone is paramount:

In Europe, however, values have shifted.
Not everyone was allowed to bid:
If a customer successfully completed this process, they received an individual bidder number linked to their registration:

According to Kindermann, a total of around 900 people from 51 countries had registered for the Geneva Luxury Auction Week.