![Rare blue diamond Bulgari ring fetches £1.9m after appearing at auction for the first time | Blue diamond engagement ring, Most expensive jewelry, Blue diamond Rare blue diamond Bulgari ring fetches £1.9m after appearing at auction for the first time | Blue diamond engagement ring, Most expensive jewelry, Blue diamond](https://i.pinimg.com/originals/ff/6d/a8/ff6da8c1afc9aff239c54eeca33bb7e1.jpg)
Rare blue diamond Bulgari ring fetches £1.9m after appearing at auction for the first time | Blue diamond engagement ring, Most expensive jewelry, Blue diamond
![The Bulgari Trombino deep-blue diamond ring (Bonhams April 2013) | Beaux bijoux, Bijou joaillerie, Bijoux modernes The Bulgari Trombino deep-blue diamond ring (Bonhams April 2013) | Beaux bijoux, Bijou joaillerie, Bijoux modernes](https://i.pinimg.com/originals/5a/11/47/5a1147ded91b1049d8250cfee776c115.jpg)
The Bulgari Trombino deep-blue diamond ring (Bonhams April 2013) | Beaux bijoux, Bijou joaillerie, Bijoux modernes
![Bulgari Blue and Pink Sapphire Diamond Gold Ring at 1stDibs | pink sapphire bulgari, bulgari sapphire ring Bulgari Blue and Pink Sapphire Diamond Gold Ring at 1stDibs | pink sapphire bulgari, bulgari sapphire ring](https://a.1stdibscdn.com/archivesE/upload/1701400/j_2560041472499088081/256004_l_master.jpg?width=768)
Bulgari Blue and Pink Sapphire Diamond Gold Ring at 1stDibs | pink sapphire bulgari, bulgari sapphire ring
![Rare blue diamond Bulgari ring fetches £1.9m after appearing at auction for the first time | Daily Mail Online Rare blue diamond Bulgari ring fetches £1.9m after appearing at auction for the first time | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2011/09/21/article-2040065-0E003CE700000578-53_468x428.jpg)
Rare blue diamond Bulgari ring fetches £1.9m after appearing at auction for the first time | Daily Mail Online
![GIA on Twitter: "#FunFact: Only one in 10,000 carats of diamonds displays a fancy color, making them among the most rare and costly of all gems. The “BVLGARI Blue” ring featuring a GIA on Twitter: "#FunFact: Only one in 10,000 carats of diamonds displays a fancy color, making them among the most rare and costly of all gems. The “BVLGARI Blue” ring featuring a](https://pbs.twimg.com/media/DP-eZgWVwAAOWE7.jpg)