The fancy color in diamonds is most often the result of nitrogen and boron impurities. Occasionally the color of a diamond is the result of structural defects within the diamond crystal.
The presence of dispersed nitrogen within a diamond may cause the diamond to exhibit a yellow color. The presence of boron may cause the diamond to be blue in color, like the Hope diamond.
Pink, red, and purple diamonds are believed to be the result of pink graining (lamellae) or deformation of the diamond structure which results in pink coloration in what would otherwise be a colorless diamond.
It is believed that most green diamonds are green because of natural irradiation or hydrogen impurities. Black diamonds are colored by the presence of an abundance of graphite inclusions.
Fancy colored diamonds are always cut to compliment the depth of the color and not necessarily visual performance, thus the concept of “ideal proportions” can not be assigned to diamonds of fancy colors and intensities. Fancy colored diamonds are valued by carat weight, clarity and the depth or intensity of color.
Fancy color diamonds are described by the intensity of hue and saturation. Deeper intensities and concentrations of color make the diamond more valuable and rare. How evenly distributed the color is throughout the diamond is also taken into account. Here are the terms commonly used to describe the intensity of color in fancy colored diamonds:
At the present time, there are three types of fancy colored diamonds available in the open market:
It is perfectly natural to decide that a "natural, untreated fancy colored diamond" is the only option worth consideration. However, it is also important to keep in mind that the rare nature of fancy color diamonds can make them quite expensive.
Falling in love with the depth and beauty of a natural fancy blue colored diamond can be an expensive endeavor given that prices start in the range of one-hundred thousand dollars per carat for visibly included qualities. Believe me, it can be a real eye opener for people who are just beginning to familiarize themselves with fancy color diamond prices.
Natural, treated, and lab-grown fancy colored diamonds provide consumers outside the realm of Hollywood with access to "the look" for a more reasonable price. However, those options also have their downsides because the color might fade over time and there have been stability issues with lab-grown diamonds.
There are many places to buy fancy color diamonds online. However there are only a few vendors who truly specialize in the niche category of fancy colored diamonds:
Of course, I'm happy to help you search for fancy colored diamonds or help you evaluate the details. Just send me a request using our free Diamond Concierge Service. Provide me with the details of the fancy color diamond you are looking for and the price range you are working with. If you already have a few options in mind, then send me links to the diamond details pages.
You might be interested to know that fancy color diamonds come in practically every color of the rainbow. For example, this extremely rare violet diamond was unveiled by the Rio Tinto mining group. The 2.83 carat, oval brilliant cut, violet diamond pictured below was recovered from the Argyle Diamond Mine in Western Australia.
This is the largest such diamond ever recovered from the Argyle mine. The diamond is known as The Argyle Violet. It was graded by the GIA Gem Trade Laboratory as a notable diamond with the color grade of Fancy Deep Greyish-Bluish-Violet.
This extremely rare violet diamond is going to make a fabulous centerpiece at the 2016 Argyle Pink Diamond Tender, which is the annual showcase of the rarest diamonds recovered from the Argyle mine.
The Argyle mine is well known as the source for more than 90% of the world’s rare pink diamonds. It also happens to be the only known source for violet diamonds which are rich in color. Violet diamonds are so rare, that the Argyle mine has produced only 12 carats of violet diamonds in the past 32 years.
The Argyle Violet which weighs 2.83 carats. It was cut from a piece of diamond rough weighing 9.17 carats. The piece of violet diamond rough was discovered in 2015. It was cut by diamond cutter, Richard How Kim Kam, who is one of Argyle’s master diamond polishers.