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

The Bleu Royal, one of the most expensive diamonds ever sold? The

Bleu Royal diamond set to dazzle in Geneva jewels sale

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

This Rare Gem Could Sell for $50M

Shash and Pam's Website

Royal Coster Diamonds

This Rare Gem Could Sell for $50M

Vivid blue diamond sells for more than $44 million at Christie's

Photos: Vivid blue diamond could sell for $50 million at

Famous Fancy Vivid Diamond Could Fetch 50 Million Dollars At Auction

Bleu Royal diamond rakes in nearly $44 mn at Geneva auction

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

The Bleu Royal Diamond Could Fetch $50 Million at Auction

Christie's sells rare blue diamond for over $43 million (Global) 8