Black diamonds have transitioned.
At first, they may have been simply cast aside after being mined, but these days they’re sought after.
Yes, some ladies even want them in their engagement rings.
They’re worth a second look, so let’s discuss this unique jewel.
Black Diamonds: A Short History
Originally no one thought them worth much.
For example, J.R. Sutton wrote this in 1928: “Ordinary black diamond is not greatly unlike black sealing wax.
Opinions differ as to its virtues as a gemstone.” (excerpt from Diamond: A Descriptive Treatise).
And unlike other colored diamonds, there aren’t many famous black diamonds either.
But one example comes with a challenging back story.
The Black Orloff or Eye of Brahman as it was also known—a 67.50 ct black diamond—was apparently stolen early in the 19th century.
It was nabbed from an Indian idol.
The story goes that there was a curse connected to it, making many of its owners kill themselves, before the hex was broken by cutting up the stone.
Today these pieces look resplendent where they’re set among other stones.
In modern times these days black diamonds are known as ‘Fancy Blacks’ and they’re widely popular.
However, the popularity only started late in the 1900s where they served designers well as a contrast to other small stones such as colorless diamonds, using pavé settings.
Perhaps the time for black diamonds’ popularity started when popular TV character Carrie received her 5ct engagement ring from Mr. Big.
This happened in 2010 as part of the ‘Sex in the City 2’ movie.
On top of this these stones got publicity with Kat Von D and Carmen Electra also sporting these diamonds some years after the film.
Ever since, their popularity grew.
But what makes these stones different?
The Black Hue Explained
It’s only in recent times that the reason for this blackish color has been investigated.
Now we know that multiple mineral inclusions result in the dark look of the diamond.
This can include hematite, pyrite or even graphite that ends up inside the diamond.
Alternatively, through graphitization a cleavage or fracture can also be stained dark.
It is when these internal features appear in concentrations that an almost colorless or a brown or an olive shaded diamond can appear black.
These stones often look metallic because they’re usually opaque.
But they display exceptional luster.
A challenge creeps in when you want to cut or polish one of these stones because the inclusions make this difficult.
Even setting them is tricky.
But when it’s done right the end result of using a natural color black jewel is exceptional and definitely unique when compared to other diamond jewelry.
A bonus is that these diamonds often have a lower price tag than others.
It’s interesting that color can be induced too and this often happens when these black jewels are obtained for jewelry making, such as engagement rings.
For example, a gray diamond with many inclusions can be put through a process of treatments with high temperatures and low pressures.
This graphitizes fractures which of course leads to a more black than gray hue.
But what about grading these unique stones?
Grading a Black Diamond
Most diamonds are graded according to an International Diamond Grading System from GIA and the 4Cs:
This applies to colorless and near-colorless diamonds, rated from D to Z.
But black diamonds don’t fall into this category, with GIA opting for their grading system that applies to colored stones because:
Firstly, because the opaqueness and inclusions of a black diamond prevent one from using the clarity scale for grading.
Tone is also a role player because unlike pink, blue or yellow diamonds, there isn’t a tone or saturation variation.