The beauty of diamonds requires 4.5 billion years of precipitation
You only know how to wear diamonds and see diamonds. But do you know that diamonds have grown slowly underground since the Earth was formed? From birth to being discovered in more and more places, how did it change from the original stone to the treasure on your neck? How many important events happened in the 4.5 billion years of diamonds? Today, I walked through the time tunnel with Xiaobian~
4.5 billion years ago
Shortly after the birth of the Earth, the oldest diamonds began to form deep in the Earth.
4th century BC
The first diamond was found in a valley in India. As more and more diamonds were discovered, Indians began to use it as a tool. They collided two diamonds and caused some diamonds to split and collapse. This is also a diamond. Open the beginning of processing. Until the seventeenth century, India was the sole source of diamonds.
1477
When Austrian King Maximilian I made a kiss with Princess Mary of France, he wore a diamond-set ring on the princess's hand, making the first wedding ring in history.
Wedding of King Maximilian I of Austria and Princess Mary of France
First wedding ring
1725
Brazil discovered large diamond deposits and replaced India as the world's largest supplier of diamonds at the time.
1866
A 15-year-old boy found a diamond weighing 21.25 carats on a Decker farm on the banks of the Orange River in South Africa. This was the first time that South Africa discovered a diamond, which immediately led to an extraordinary diamond excavation.
1905
The world's largest Cullinan diamond was discovered at the Premiere mine in South Africa. It weighed 3106.75 carats, the size of an adult man's fist. The two largest cuts are set in the king's scepter and crown.
1919
The mathematician Marcel Tolkowsky has accurately calculated 58 round face multi-face cutting methods based on the diamond refractive index, which has been popular ever since.
58-face round multi-faceted diamond cutting diagram
1947
A young ad copywriter, FrancesGerety, created the most classic slogan "ADiamondisForever" for diamonds (diamonds are long-lasting, a permanent pass).
1953
GIA expert Richard T. Liddicoat invented the Diamond 4C grading system to evaluate diamond grades in terms of net weight (CaratWeight), clarity (Clarity), color (Cut) and Cut (Cut). The standard has since been born.
Invention 4C graded GIA expert Richard
T.Liddicoat
in 1980
The discovery of diamonds in Australia's potassium-magnesium lamprophyre is a breakthrough in the study of diamond deposits. These deposits contain a certain number of brightly colored rose, pink and a small amount of blue diamonds, and the number of colored diamonds has increased significantly. Australia has also since become the world's number one diamond producer.
Ellendale Mine, Australia
year 2002
In order to eradicate the illegal trade of African blood diamonds and maintain peace and stability in the African region, the UN General Assembly resolution passed the Kimberley Process, which requires exporting countries to enclose and issue Kimberley Process certificates for each batch of exported rough and semi-finished diamonds. Is allowed to import.
The green part is the country that participates in the Kimberley Process.
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