These are some of the most expensive diamonds in the world
The Rarest of the Rare: Multimillion-Dollar Blue Diamonds
Sotheby's to auction off blue diamonds valued at $70 million
Oppenheimer Blue' Diamond Sells at Auction for $57.5 Million
The Most Expensive Diamonds in the World
9 Most Expensive Diamond Rings of All Time - Wedded Wonderland
Which Stones and Precious Metals Are the Most Valuable - Watch & Wares
THE MOST EXPENSIVE RINGS IN THE WORLD - Israeli Diamond Industry
Hong Kong tycoon buys 77 million US dollars worth of diamonds for
Rare pink diamond smashes record - SWI
Rare Jewels and Amazing Movie Star Accessories Up for Auction in
THE BLUE MOON'. Now 'THE BLUE MOON OF JOSEPHINE'. An exceptional