Why it is so valuable? How it is made?

The diamond is considered the most famous, elegant and valuable jewel in the world. It is the hardest substance that found in nature. Its hardness and high dispersion of light make it useful for industrial applications and jewelry, such as make into a drill or knives which are used for cutting glass. To jewelry, it can be made into a necklace or a ring. It is called the king of the jewelry.

Diamonds were made as a result of great volcanic heat and pressure. A volcano is a mountain with a hole in the top. When a volcano is very active it sometimes explodes and causes great damage. Since it is very deep of the hole, and it can generate a great deal toxic gas, so it is dangerous to the people who want to find the diamonds. This is one reason. For it can generate so little diamond one time, so there is not so much diamond in the world. It is said that” something is expensive if it is little”. This is another reason why it is so dear. Although human beings can produce diamond use some high technology, but it can not compare with the one that generate in nature. Of course, it can not be just two reasons of why diamond is so expensive, but these are the main reasons.

Diamonds were pushed towards the surface of the earth-millions of years ago-by a number of great volcanic explosions. It is in the narrow volcanic pipes that diamonds are found. They are also found among the sand and stones of certain riverbeds, and in a few place on the floor of the sea, for they were washed down the mountainsides by the rain.

Diamonds are very rare. There are not many diamond pipes or diamond-producing rivers in the world. During the last century, adventurers from Europe went to Brazil, because they had heard that there were diamonds in the river Amazon. Most of these early diamond miners died of illness or were lost forever in the great forests.

The earliest known diamonds were found in India a great many centuries ago. The most recent and exciting discoveries have been made in Eastern Russia. But most of the world's diamonds now come from the Congo, from Tanzania-which has the largest diamond mine in the world-and from South Africa. These tiffany necklaces cheap include some ones found in nature, and also some ones made by human beings, and the ones made by human beings account for the most proportion. If someone travels in South Africa, they will buy some diamond back home surely.