Largest Diamond on Auction Internally Flawless – D – 163 Ct

Diamond Auction

 Largest Diamond Ever on auction Internally Flawless – D – 163 Ct

Introducing the Art of De Grisogono by offering the largest diamond flawless D-colour diamond ever to come to auction – de GRISOGONO and Christie’s

An e emerald shape fancy cut diamond mined  by Lucapa Diamonds and cut from a 404 carat rough diamond stone – the largest diamond ever recovered in Angola – isl going under the hammer come 14 November 2017 at Christie’s in Geneva.

Set into an asymmetric necklace designed by de GRISOGONO, this 163.41 carat, flawless D-colour emerald-cut diamond is the largest ever to come to auction

In February 2016, Lucapa Diamond Company announced the discovery of the biggest recorded diamond in Angola, confirmed as a Type IIa D-color gem-quality stone. The 404-carat diamond from the Perth-based company’s Lulo project is also the 27th biggest recorded diamond in the world and the biggest diamond ever discovered by an Australian company.

Nikolas Polka, CEO of diamond consortium Nemesis International, bought the rough stone and turned to Fawaz Gruosi, founder and creative director of De Grisogono, a Geneva-based jeweler.

A team of more than 10 specialists transformed the 404.20 carat diamond – the largest they had ever worked with – into the final cut-and-polished gem.

Christie’s statement above describes how, “Diamond expert Isaac Barhorin spent weeks examining the stone in different lights … ‘I start by seeing what the stone can give,’ Barhorin explains. ‘I am looking for cracks, grainy spots, feathers and carbon spots, and I will build the stone around these.

The goal is to reach an internally flawless stone.’ Using a felt-tip pen, he marked where the first cuts should fall.. They go on to explain how, “On 29 June 2016, after months of analysis, 80-year-old master diamond cleaver Ben Green was ready to go to work. A diamond cutter since 1964, Green is respected as the number-one cleaver in the world. ‘Diamond is like wood, it has a grain,’ he says. ‘You can saw it or divide it along the grain.’ Using the traditional low-tech tools of the diamond cleaver’s trade – dark cement to hold the diamond in place on the wooden stump, a loupe and two flat blades- Green split the stone cleanly in two.”

The diamond that was extracted from it is one of the largest D-Flawless emerald-cut diamonds the GIA has ever seen, and the largest ever to be offered for sale at auction. “The extreme rarity of a diamond of this quality cannot be overstated,” GIA researchers wrote in their monograph on the stone.

De GRISOGONO founder Fawaz Gruosi and his team of five master craftsmen and women then setting about transforming this hug stone into a wearable piece of jewelry. Gruosi and his team eventually decided on an asymmetric design featuring 18 emerald-cut diamonds on one side, with the 163.41-carat diamond as the centrepiece. After being sent on a tour to Hong Kong, London, Dubai and New York, the 163.41 carat, flawless D-colour emerald-cut diamond will be offered in Christie’s Magnificent Jewels  sale on 14 November in Geneva.


Giant diamond originating from the largest rough in Angolan history will go under the hammer at Christie’s in Geneva in November.

28 September-1 October 2017
22nd Floor, Alexandra House, 18 Chater Road Central

4-7 October 2017
8, King Street, SW1Y 6QT London

de GRISOGONO in Dubai
17-19 October 2017

4-5 November 2017
Rockefeller Centre, 20 Rockefeller Plaza

Contact Corlia Roberts for more on diamonds, diamond auctions or Diamond Courses 


Emerald-cut diamonds, top choice for celebrities

celebrities, Emerald cut, engagement rings,

Emerald-cut diamonds are the top choice for celebrities getting engaged in 2017, according to a survey.

Emerald-cut diamonds are the top choice for celebrities getting engaged in 2017, according to a survey by 77 Diamonds.

77 Diamonds been at the forefront of the diamond jewellery industry for nearly a decade. In an expanding world of retail outlets and faceless websites, we offer finely crafted diamond jewellery that is great value for money while maintaining a quality of product and service that is second to none.

Analysts studied 100 celebrity proposals of the past few years, from Kate Middleton, Duchess of Cambridge, to reality-TV personality Kim Kardashian, looking at cut, carat, metal and style.

“The oval-cut diamond was a celebrity favorite in 2013 and 2014,” the report by online jewelry retailer 77 Diamonds said. “Since then, emerald has been the fashionable go-to. While diamonds last forever, it seems metal and cut change with the times.”

Yellow gold is the most popular metal for stars’ engagement rings in 2017, replacing white gold, which was the number-one choice in 2016. Platinum was the top option between 2013 and 2015.

Celebrities have been spending much more on diamond quality than in previous years. The average ring cost reached $1.29 million (GBP 1 million) in 2016 for the first time.

Romance also appears to be seasonal, with celebrities in the survey getting engaged in either the summer or the festive season. However, the fact that celebrities travel to the southern hemisphere for their engagements skews the data, as summertime is in December and January there, the report added.

The more often a celebrity has been married, the more they will spend on the ring, the data shows. Where both celebrities have been married before, the average ring value is $3.5 million. The average ring value for celebrities on their first marriages is $584,576.

First-timers spend an average of three years together before getting engaged, the report said. In contrast, where both partners have been married once before, it takes 28 months for the man to pop the question. For couples in which only the proposer is approaching a second marriage, it takes them just 14 months to get engaged.

But money doesn’t buy everything: Couples who are now separated spent an average of $1.1 million on their ring, while those still together spent a modest $630,754.

Buy Emerald-cut diamonds

MTV Video Music Awards

MTV Video Music Awards

The red carpet at this week’s MTV Video Music Awards (VMAs), featured its share of zany—and also unusually prim—fashion.

But as jewelry watchers, we were most struck by the overwhelming number of ultraglamorous, white metal jewelry pieces that popped up on music’s biggest stars (in case you missed it, here’s JCK’s full VMAs jewelry roundup).