From sparkling multi-million-dollar diamonds to custom designs, here are the most expensive diamond rings in the world that ...

The extremely rare, 10-carat Mediterranean Blue diamond could fetch a whopping $20 million at Sotheby's High Jewelry auction ...

Blue Nile is a one-stop shop for all ... With seven princess-cut diamonds set on a white gold band, this ring is perfect for a wedding band or special occasion. A colorful take on the classic ...

A string of diamonds is intertwined with a band of bright rose gold, making this ring easy to wear while still being extravagant. Blue Nile’s pear-shaped emerald diamond pendant pairs elegant ...

“Any vivid blue diamond is a discovery worth celebrating, but one of this size and depth of color is a rare event,” said Quig Bruning, Sotheby’s Head of Jewelry for the Americas & EMEA.