Then there's the Korloff Noir, an 88-carat, 57-facet diamond originally discovered in Siberia in 1917. It's billed as the world's largest known black diamond and belongs to Daniel Paillasseaur ...

The 555.55 carat and 55 facet stone, which is being seen by the public for the first time in Dubai, was also viewed by leading diamond trading companies from Dubai and around the world at the ...

Last week at Sotheby’s Dubai, a 555.55 carat black diamond called “The Enigma” was unveiled and it will become the largest faceted diamond of any kind to appear at auction when it goes under ...

Easily the most recognizable engagement ring in the royal family and the world, Princess Diana’s blue Ceylon faceted sapphire ring comes in at a whopping 12 carats. The sapphire, encircled by 14 ...