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The origin of natural diamonds


The history of diamonds is longer than that of human beings. Generally, diamonds are formed from nature and are composed of carbon element. They are also the hardest and simplest gemstones in the world. In addition, diamonds are also the fastest conducting material with high transparency.


Because diamonds are hidden more than 120 kilometers underground, and in the high temperature of 900 ° C to 1300 ° C and the atmospheric pressure of more than 45000kbar, carbon crystals are formed after billions of years. Then, in case of volcanic eruption, diamonds erupt to the ground with magma.


The scarcity and difficult mining of natural diamonds, coupled with the complex processing procedures for making jewellery, reflect that diamonds are quite rare and precious.


When it comes to diamonds, many people think that the larger the grain, the better. In fact, when purchasing diamonds, there is a set of standards for reference. GIA, the world's highest authority in the field of diamonds, coloured gemstones and pearls, puts forward that diamonds have 4C grades, including clarity, colour, cut and carat, which are collectively referred to as 4C.



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