Black diamond (also known as black diamond or carbonaceous diamond) is a natural polycrystalline diamond, which is found in alluvial deposits in Central Africa, China 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.

Use a small bowl or teacup to hold warm water. Soak the diamond in water, brush it gently with a toothbrush, then wrap it with a sieve and rinse it with warm water under the tap. Finally, dry it with a soft cotton-free flannel.

Heise fashion

Among the popular retro styles in recent years, represented by the tragic jewelry style of Victorian era, black diamonds have become the new favorite of fashion. Queen Victoria of England, because of her widowed wife, always wears only black jewelry to show her eternal sadness. At that time, black gems became the leading role on the jewelry stage. Nowadays, when many new materials are added to this kind of jewelry, such as black pearls and other precious stones. However, at this time, black jewelry has lost its sadness, replaced by dignity and fashion.

In the past, black diamonds were generally used as collectibles, and some of them were used as treasures in jewelry stores. The French jewelry brand Kexin once shone a black diamond weighing 88 carats when it came out in 1996, which attracted the attention of many collectors.