Posted on Jul 23, 2021 71
Diamonds are valuable not only in jewelry but also in industry. They are used in optics and electronics, as well as for making drills and cutters of particular strength. An interesting fact is that the price of the extracted diamonds is only 10% of the profit that is made by the jewelers and dealers.
10 interesting facts about diamonds
1. Diamond is the hardest natural material on earth. This does not mean that it does not break or shrink in size. If you put a diamond in a microwave oven and raise the temperature to 763 degrees Celsius, it will simply disappear without a trace. Nothing will remain in the microwave, only the carbon dioxide that was produced in the process.
2. In 1814, Humphry Davy and Michael Faraday proved conclusively that diamond is a chemical relative of coal and graphite.
3. The first to perform thermodynamic calculations of the graphite-diamond equilibrium line was the Soviet physicist Ovsey Ilyich Leypunsky in 1939, which was the basis for the synthesis of diamond from graphite-metal mixture in high pressure apparatus. This method is still used today.
4. It takes a long time to form a diamond. They are formed underground for more than a billion years at a depth of 150 kilometers within the Earth’s crust. Later, they rise to the surface during volcanic eruptions or are washed out by underground rivers.
5. A diamond is 58 times harder than the second hardest stone, corundum. People have tried many ways to cut diamonds, only to discover later that the only way is to use another diamond.
6. The cut diamond, the diamond, has been the most popular and expensive gemstone for decades. It is interesting that the price of a diamond is because of the extremely high monopolization of this market. In fact, the cost of diamonds is about $100 per carat.
7. The biggest diamond in the world is the Cullinan. This block was found in South Africa. Before it was cut, it was weighed and weighed 3,000 carats. Later it was used to make big star Africa diamonds, young star Africa and other jewelry. The diamonds weighed 530.2, 317.4 and 104 carats, respectively. Smaller diamonds are now part of the royal regalia of the British.
8. One of the important properties of diamonds is their luminescence. Sunlight, especially cathode rays, ultraviolet rays, and X-rays cause diamonds to luminesce and glow in different colors. This property is widely used in practice to extract diamonds from rock.
9. In order to distinguish between a genuine diamond and its imitation, a special “diamond probe” is used to measure the thermal conductivity of the examined stone. A diamond has a much higher thermal conductivity value than its substitutes.
10. Blue diamonds are the rarest; only 1-2 blue diamonds are mined per 10,000. This coloring is because of the presence of boron atoms in the stone’s structure.