Bleu Royal: Vivid blue diamond could fetch over $50 million at

Christie's hopes Bleu Royal's final bid will surpass Oppenheimer Blue's, which fetched over $57 million in 2016

Bleu Royal,' the biggest vivid blue diamond ever auctioned, sells

The Bleu Royal Diamond Could Fetch $50 Million at Auction

Blue Diamond: Vivid blue diamond could sell for $50 million at

This 17-Carat 'Bleu Royal' fancy vivid blue diamond could fetch US

Blue diamond prices – The Diamond Certification Laboratory of

Top 10 Most Expensive Blue Diamonds - Haywoods Jewellery

Bleu Royal' diamond fetches almost $44 million at Christie's

Vivid blue diamond could sell for $50 million at Christie's

Bleu Royal diamond set to dazzle in Geneva jewels sale

Vivid Blue Diamond “Bleu Royal” Sells for Nearly $44 Million at

Vivid blue diamond could sell for $50 million at auction

Rare Jewels and Amazing Movie Star Accessories Up for Auction in

Bleu Royal: Vivid blue diamond could fetch over $50 million at

Bleu Royal diamond set to dazzle in Geneva jewels sale

Vivid blue diamond could sell for $50 million at Christie's