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

Learn more This article was created in partnership with Blue Nile. The products featured ... a dramatic look unlike any other stone. This teardrop pendant featuring the stone is both eye-catching ...

"This stone was special," Asprey's then-head ... wore a similar oblong blue-diamond pendant from Harry Winston valued at $20 million, creating perhaps the costliest mini-trend in red carpet ...

Fine jewelry designer Suzanne Kalan, known for her work with the eternal stone, has teamed up with Natura Bissé on an exclusive diamond facial. “The Mediterranean Blue” is 10.3-carat fancy ...