903/​319

Sjælden fancy intens gul diamantring af 18 kt. hvidguld prydet med radiant-cut naturlig intens gul diamant på ca. 6.49 ct. flankeret af talrige marquiseslebne diamanter på i alt ca. 1.86 ct. Farve: River (D-E). Klarhed: IF-VVS. Str. 54. Diamant med inskription GIA 2191411892. New York, ca. 2018.

GIA certifikat nr. 2191411892 medfølger. 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 attached to it during the formation process. The intensity of the yellow is dependent upon varying amounts 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, that is fancy intense or fancy vivid. The difference between yellow diamonds and white diamonds is that white diamonds have little to no nitrogen, and therefore do not show colour. 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. Fancy Yellow Diamonds can have shades of other colours present as well, such as orange or brown. The most desirable and valuable yellow diamonds, however, are those with a pure, intense yellow colour. These pure yellow diamonds are often referred to as Canary Diamonds, or Canary Yellow Diamonds. Canary Diamonds, named because their shade resembles that of a canary bird, are the most desirable of all yellow diamonds, and thus command the highest prices.

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, near the farm where he lived with his family. Erasmus showed the stone to his father, who in turn showed it to a neighbourhood farmer who who found the stone to be very intriguing and 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. It was named the Eureka Diamond, and is the single most important diamond in the history of South Africa. A few years later, two Dutch settlers ,Johannes Nicolaas de Beer and his brother Diederik Arnoldus 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 for £6,600. 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 land became the site of the Big Hole and the De Beers mine, which eventually formed the basis of the De Beers Company which in time was the sole owner of all diamond mining operations in the country.

The Eureka diamond exchanged many hands 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.

Auktion

Smykker, 23. september 2021

Kategori

Smykker ▸ Ringe

Vur­dering

750.000–1.000.000 DKK

Hammerslag

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