It's an old-mine cushion cut. GUEST: Right ... I just had to let you know about the diamond. GUEST: Well, I'm glad you did. That made my day. (laughing) My year. APPRAISER: Yeah, but thanks ...

An example is the old mine cut, which creates a squarish stone with rounded corners and a high crown (the top portion of the diamond), a style popular in the Georgian and Victorian eras.

While it may look like a blazing red ruby, the 2.33-carat Winston Red Diamond is just that—a diamond. One of the rarest ...

It’s red.” Up close, the old-mine-cut diamond—shaped like a square, with rounded edges—has a stunning, saturated hue. Only about 30 percent of natural diamonds are considered gem-worthy ...

The Cullinan Diamond became a part of the British Crown jewels after being cut and polished. "This latest recovery joins an impressive roster of other significant finds from the mine, including ...

The Cullinan was 3,106 carats and was cut into gems, some of which form ... reinforces Karowe's position as a truly world-class diamond mine." A bigger black diamond was discovered in Brazil ...

Another smaller diamond from the same mine in Botswana was sold for $63 million ... The famous Cullinan was 3,106 carats and was cut into gems, some of which form part of the British Crown Jewels.

It’s red.” Up close, the old-mine-cut diamond—shaped like a square, with rounded edges—has a stunning, saturated hue. Only about 30 percent of natural diamonds are considered gem-worthy ...