Rare things are precious, diamonds are non-renewable resources, and many drilling mines are facing the problem of gradually drying up their ore mining capacity. We know that diamonds refer to diamonds that have been cut and ground. Of the diamonds mined, only 20% on average can reach the gem level used as jewelry in our daily life, while the remaining 80% can only be used for industry. The annual output of diamonds in the world is about 6.5438+0 million carats, the gem grade is about 6.5438+0.5 million carats, and the cut diamonds are about 4 million carats (equivalent to 800 kilograms).
It is difficult to explore and mine diamonds.
The exploration of diamonds is not as easy as other minerals. The exploration of diamond deposits often requires decades or even hundreds of years of efforts and labor, and the cost is high. Even if the deposit is found, the mining time is quite long and the cost is high. In the process of mining, it is necessary to fully exploit the ore containing diamonds and carefully ensure that the original stone in the ore is intact. Improper mining will lead to huge economic losses. Whether it is open-pit mining or underground excavation, it is a huge project. It will take years to build a house like this, not to mention such a precious and rare gem, which needs careful carving.
3. The diamond processing technology is complex and high-tech.
The mined diamonds can't be cut and polished in large quantities at once, so it is necessary to analyze the diamonds in detail and determine the final cutting scheme in order to achieve the best effect of diamonds. The general steps of cutting are: designing marking lines; Split drilling; Saw drill; Turning bit; Grinding drill; Cleaning and grading. Each one has many small steps. These operations require exquisite technology, rich experience and meticulous work. At that time, Cullinan diamond, the original stone weighed 3 106 carats, and three experienced and skilled top craftsmen worked 14 hours a day. * * * It took eight months to divide it into four big diamonds and 1 small diamonds.
4. High surcharge for commercial diamonds
Diamonds go through many links and intermediaries from mining, sorting, processing, grading and selling to consumers. There is no free lunch in the world, and every middleman should earn a reasonable fee from it. As far as sellers are concerned, high store rent, decoration, advertising fees, company operating expenses, sales staff commission, etc. , will be included in the diamond. Especially this luxury will cost more.
5. The charm of the diamond itself
Diamonds are beautiful, durable and rare. This is the only gem with the highest hardness, strong refractive index and high dispersion. Diamonds are regarded as symbols of power, majesty, status, wealth and love by human beings. Its indestructible, invulnerable, eternal and firm masculinity has always been pursued by human beings, and it has also been compared to unswerving love, which contains great cultural value.