Black diamond, also known as black diamond, is a kind of natural polycrystalline diamond, which is found in alluvial deposits in central Africa and Brazil. Usually black, dark brown and dark gray, it has excellent hardness and toughness, and the hardness and toughness are the highest. Diamonds with more pores than other diamonds have become one of the most popular decorations in the upper class. Among all kinds of diamonds, black diamonds are especially precious because of their scarcity. Hardness is comparable to other diamonds. -Quoted from Baidu Encyclopedia

Although black diamond is a kind of diamond, it is very different from other kinds of diamonds. It has a unique physical structure and chemical composition, which is also an important reason for its popularity. Black diamonds belong to whisperd, not the product of the earth, but the product of supernova explosion. It is a hypothesis that people brought black diamonds into the earth after the meteorite fell, and the formation process of black diamonds is still a mystery. Moreover, black diamonds are produced all over the world, only in Brazil and Central Africa, and there are no black diamonds in other regions.

Black diamonds have become the new favorite of the upper class, the protagonist of the jewelry stage, the symbol of dignity and fashion, and have high collection value and investment attributes. There are many small holes on the surface and inside of the black diamond, which can be clearly seen under the sunlight.

Black diamond has good oleophilicity. When it is put into oily substances, it will continuously absorb the oil on the surface, and you can obviously feel the oil feeling on the surface of black diamonds. In addition, as the king jewelry store in diamonds, Black Diamond will issue an appraisal certificate.