What cold knowledge do you have about diamond jewelry?

As the hardest gem in the world, diamonds can be easily broken by a hammer???
And there are so many diamonds that each person can have one. Why are they so expensive?!!
This kind of gem that people all over the world can't put it down is not only dazzling and moving, but also has a lot of cold knowledge that is rarely known!

1. Although diamonds are the hardest natural substances, they can be easily broken with a hammer.

2. The United States is the world's largest diamond consumer market, with about 40% of gem diamonds purchased by the United States.

3. The standard weight unit of diamonds is 0.2g, which is actually because the Greeks used the seeds of longhorn beans as weighing diamonds. The weight of the seeds is stable, usually 0.2g.

4. The earliest origin of diamonds is in India. The first diamond in the world was found on the riverbed of Golconda region, about 4000 years ago.

5. There are many substances in the world that can be made into artificial diamonds, such as bone ashes.

6. The three largest diamond mines in the world are located in Botswana, Russia and Canada. So don't think diamonds are all from South Africa.

7. Diamond and pencil lead are carbon in fact, but they are arranged in different ways.

8. Diamonds can be burned by fire, but the temperature must reach 1290 to 1650 degrees Fahrenheit.

9. Most diamonds are between one billion and three billion years old.

10. To produce 1 carat of diamonds, about 250 tons of raw ore need to be mined, so the high cost of diamonds also includes labor costs.

11. The amount of diamonds on the earth is very large, as many as one person, but the diamonds that really reach the gem level are very rare. Most diamonds play a role in industry.

12. The largest diamond in the world was found in Zaire Berimel, South Africa, on January 27, 1905. The diamond is named "Cullinan" and weighs 3106.75 carats,. Later, it was processed into nine large diamonds, namely "Cullinan I", "Cullinan II", "Cullinan III", "Cullinan IV" and the other five were inlaid on the edge of Queen Mary's crown.

Among them, the "Best of the Century" is the "Curinan I", also known as the "Star of Africa", weighing 530.2 carats. It is now inlaid on the scepter of the Emperor and stored in the Tower of London.

13. There are also many diamonds in the universe. Every collapsed star may produce a large number of diamonds.

Article from www.showfay.com