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. Among them, the dark pink diamond was named "Artemis", which earned US$ 6,543.8+0.55 million (RMB 654.38+0.067 million), and the other diamond was named "Apollo" because of its rare color, which was more than twice as expensive as the pink diamond.

Diamonds have the highest hardness and high brittleness among natural minerals, so they will break when they collide with each other. From the ancient Greek agonist, which means hard and inviolable substance, it is recognized as the king of gems. Diamonds In other words, diamond is actually a kind of carbon crystal with quite high density.

Card, or translated as carat, carat, is the quality unit of diamond. One calorie is equal to 200 milligrams. It is said that early diamond dealers claimed that the weight used in diamonds was the fruit of Mi Dou tree, and one such fruit weighed about 200 mg. Because the density of diamonds is basically the same, the heavier the diamond, the bigger the volume. The bigger the diamond, the rarer it is, and the higher the value of each card.