903/​319

An important fancy intense yellow diamond ring set with a radiant-cut natural intense yellow diamond weighing app. 6.49 ct. flanked by numerous marquise-cut diamonds weighing a total of app. 1.86 ct., mounted in 18k white gold. Colour: River (D-E). Clarity: IF-VVS. Size 54. Diamond with inscription GIA 2191411892. New York, circa 2018.

Accompanied by GIA natural coloured report no. 2191411892. New York, 2018.

Colour distribution: Even. Colour origin: Natural. Clarity: VS1. Polish: Excellent. Symmetry: Very good. Fluorescence: None. Cut quality of white diamonds: Excellent.

Within the range of rare, coloured diamonds, only 1 carat out of every 10,000 carats mined is a natural fancy colour diamond. While a regular colourless diamond is made of pure carbon, the cause for the yellow colour is from traces of nitrogen that become attached to the carbon during the formation process. The intensity of the yellow colour is dependent upon the amount of nitrogen. A diamond with a higher amount of nitrogen will show a stronger yellow colour and will receive a colour grade that is higher. For instance: fancy intense or fancy vivid. With white or colourless diamonds, the higher the tint of colour, the lower the value of the diamond. However, the deeper the hue of a fancy colour diamond, the more valuable it is. The most desirable and valuable yellow diamonds are those with a pure, intense yellow colour.

The Eureka Diamond The first diamond discovered in South Africa was yellow. In 1867 a 15-year-old boy named Erasmus Jacobs found a small transparent rock along the banks of the Orange River. Erasmus showed the stone to his father, who in turn showed it to a neighbouring farmer who offered to buy it from the Jacobs family. Not realising its value, he sent it, via ordinary mail, to Grahamstown, where Dr William Guybon Atherstone confirmed that it was a 21.24 ct. diamond. It was later cut to a 10.73-carat cushion-cut diamond and named the Eureka Diamond. It is the single most important diamond in the history of South Africa. A few years later Johannes and Diederik de Beer discovered diamonds on their farm. This discovery led to the Great Kimberley Diamond Rush, where people from all over the world rushed to Kimberley in the hope of finding diamonds. The two brothers sold their farm and their name De Beers, was given to one of the mines, and today, the De Beers name is still synonymous with the diamond industry worldwide. The Eureka diamond changed hands many times before it was finally purchased by De Beers, who donated the Eureka to the people of South Africa. It is currently on display at the Kimberly Mine Museum in South Africa.

Additional Remarks

Payment is possible only by credit card in the salesroom or by bank transfer.

Auction

Jewellery, 23 September 2021

Category
Estimate

750,000–1,000,000 DKK

Price realised

Not sold