Emerald Cut Diamonds

The emerald cut diamond is an oblong cut diamond with truncated corners.
Emerald cut diamonds are also referred to as "Cut-Cornered Rectangular Modified Brilliant."

It is an ideal shape for showing off the warmer tones of a stone. There are other shapes which are better suited for displaying elements such as sparkle, fire, and brilliance. The shape of emerald cut diamonds show off both the color and the clarity of a diamond. It is a little harder to to avoid seeing the inclusions in an emerald cut diamond so the higher clarity grades are more highly sought after when an emerald cut is purchased.

Ring settings which feature emerald cut diamonds as the main stone often include side stones. This is found to greatly enhance the center diamond. An interesting feature of emerald cut diamonds is that they look bigger for their carat weight than a great deal of other types of cuts.

People who want a big rock, and would rather have less sparkle than a traditional round cut brilliant often opt to buy an emerald cut diamond.

screenshot of news announcement on diamonds.net
Source: http://www.diamonds.net/News/NewsItem.aspx?ArticleID=58059

A blue diamond ring went under the hammer in Geneva in November 2016 with an estimated price tag of $15 million to $25 million, or up to $3.1 million per carat.

The square emerald-cut, 8.01-carat, fancy vivid blue diamond, named the ‘Sky Blue Diamond,’ headlined Sotheby’s Magnificent Jewels and Noble Jewels auction on November 16.

Fancy vivid blue, the highest color grade possible for a blue diamond, had at the time been awarded to no more than one percent of blue diamonds submitted to the Gemological Institute of America, Sotheby’s said. The fancy vivid blue diamond had been mounted by Cartier. The diamond is reported to have “excellent” polish and is a type-IIb stone.

The Sky Blue Diamond was the latest in a string of blue diamonds sold by leading auctioneers. Earlier that same year the 14.62-carat Oppenheimer Blue fetched a world-record $57.5 million at a Christie’s sale in Geneva in May.  Sotheby’s brought in $48.5 million for the Blue Moon of Josephine in the Swiss city November 2015.

Another emerald cut diamond auction was announced this month. 

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At its Magnificent Jewels auction in Hong Kong this May, Christie’s unveiled the top lots that will go under the hammer including Harry Winston’s famous Jonker V diamond.
The rectangular-cut, 25.27-carat, D-color, VVS2-clarity diamond is expected to sell for no less than $2.2 million, though speculation about the final price is thought could reach up to $3.6 million. That is an incredible $142,461 per carat.

The stone is one of 13 polished diamonds cut from the famous 726-carat Jonker rough. The discovery was made by digger Jacob Jonker at South Africa’s Elandsfontein mine in 1934. The rough diamond at the time ranked as the world’s fourth-largest gem-quality diamond. Christie's informs us that the diamond was sold in 1935 to Harry Winston. The stone was subsequently displayed during the Silver Jubilee Celebrations of the Coronation of King George V and Queen Mary.

Christie’s Hong Kong auction on May 30 will also feature an emerald-and-diamond necklace created by designer Edmond Chin, estimated at $3.6 million to $5 million.