Diamond refers to polished diamond, which is a natural mineral and the original stone of diamond. Simply put, diamond is a simple crystal composed of carbon element formed under high pressure and high temperature conditions in the deep part of the earth. Diamonds are beautiful and rare. They are symbols of love and loyalty, representing eternal love.
On May 17 and 16, Sotheby's held a spring jewelry auction in Geneva, Switzerland. A pair of colored pear-shaped diamond earrings set a new record in the auction history with a total price of about 57.4 million US dollars (about 395 million yuan). This pair of pear-shaped earrings is made in South Africa. Except for the different colors, the appearance is almost the same, weighing about 16 carats respectively.
Formation principle
Diamonds are the products of diamond processing. Diamonds are the hardest and simplest gems in the world. It is a cubic natural crystal composed of carbon. Its composition is basically the same as our common coal, pencil lead and sugar. Under high temperature and pressure, carbon element crystallizes to form graphite (black), while under high temperature, extremely high pressure and reducing environment (usually anoxic environment), it crystallizes to become precious diamond (colorless).
Since the discovery of diamonds in India, some people have found diamonds on rivers and beaches. This is because the original rock containing diamonds located in the upper reaches of the river is weathered and broken, and the diamonds are taken to the downstream zone with the water flow, and the heavier diamonds are buried in the gravel.