Black Diamonds-you will learn everything that you need to know. Towards the end of the 90s black diamonds have been used in jewelry. In time they became fashionable and popular both for women and men. And with the appearance of a black diamond engagement ring in the second film of a famous New York City series, one may say that black diamonds have arrived in the mainstream of modern jewelry design. The history of black diamonds is much less elegant as they were originally used for industrial purposes on drilling heads.
As a matter of fact, the development and increased popularity is similar to brown diamonds that nowadays are also cut and polished and very successfully marketed as “champaign” or “cognac” diamonds. At the end of the day every diamond color simply adds variety and opens new creative ways of jewelry designs.
How are black diamonds special? Colored diamonds are also called fancy diamonds and are much less common than white or colorless stones. The GIA color scale reaches from D to Z, that is, from completely colorless to a bright yellow tone.
The color scale of fancy diamonds only begins after Z. While Black diamonds belong to the category of fancy diamonds, they do have some unique features: The black color originates from small clouds and different mineral inclusions like graphite.
Fractures and cleavages within the stone turned black due to graphitization – while the base color of the stone may range from nearly colorless to yellowish or brownish. The concentration of these inclusions makes the diamond opaque and gives it the distinct and unique luster. If you have never seen a black diamond and it´s luster check out the black display of your smartphone.
The appearance is quite similar! The amount of inclusions make the cut and polish process of the stone more difficult. At the same time special attention is needed when it comes to caring and cleaning – fractures and cleavages make diamonds less stable, hence, it is recommended not to use ultrasonic baths or hot steam for cleaning. Grading and certification The Gemological Institute of America (GIA) does not issue the usual fancy diamond certificates for black diamonds: Due to the many inclusions black diamonds fall out of the clarity grading scale.
In contrast to other fancy colors like pink, blue or yellow there is no detailed color definition that would include saturation or overtone.
Instead the term “fancy black” is used. For black diamonds GIA issues a “Colored Diamond Identification and Origin Report”. Color and Treatment Natural black diamonds with black inclusions that give an equal color distribution are extremely rare. That is why most of the black diamonds that are used in jewelry today are treated. Heat treatment causes graphitization which turns the stone opaque and creates the unique luster.
In Jewelry Nowadays black diamonds are often used in combination with white diamonds, however, they are also becoming increasingly popular in solitaire engagement rings. In many cases black diamonds tend to cost less than white diamonds, especially, if they have been treated.
However, now as ever, natural, untreated black diamonds like the famous “Black Orlov Diamond” are unique, extremely rare and expensive. This special, myth-surrounding gem of 67.5 carats has been displayed in museums in London and New York.
Read More: The Rise in Value of Black Diamonds