First of all, we can see the difference in weight. Generally, the diamonds we ordinary people contact are one carat and two carats, but this 88-carat black diamond has been shipped from France to Shanghai and will be exhibited at the Third China International Import Expo, which will be its first performance in China. And this super black diamond appeared in the third China International Import Expo. This kind of diamond is called. One of the top five black diamonds in the world? .

This black diamond weighs 88 carats, is equivalent to a dollar coin in diameter, has 57 facets and is worth about 250 million yuan. This black diamond will be promoted in Shanghai. Black diamonds were originally owned by medieval European aristocrats. Later, the French Karlov family named it after a noble. Korloff Noir？ It is kept in the basement of Karlov Jewelry Flagship Store, and rarely displayed in public.

Black diamond has a unique thick black color, because the graphite and hematite contained in it completely absorb light. Data show that the formation of white diamonds and colored diamond can be traced back to 1 100 million years ago, while the formation of black diamonds can be traced back to 4 billion years ago. Studies have shown that black diamonds may be directly formed by interstellar clouds rich in carbon and hydrogen fragments, which fell to the earth after the planet exploded into a supernova.

In recent years, young people in China are more and more inclined to diamonds. According to the data of quasi-industrial association, with the influence of millennials on diamond culture, diamond consumption in China is no longer limited to wedding scenes, and diamond jewelry gradually appears in daily wear occasions. Therefore, since 20 18, the growth rate of China's diamond consumption has gradually recovered to over 4%. In 20 1289, China's diamond consumption was about128.9 billion yuan, a year-on-year increase of 5.26%.