The rarest of all fancy color diamonds, red diamonds are considered particularly valuable. In fact, only a handful of naturally formed, vividly hued, high carat fancy color red diamonds have ever been unearthed. The more common forms of red diamonds are those tinged with secondary brown or pink hues.

Red diamonds are so rare that there is little gemological information about them. What is known is that crystal lattice defects showing stress lamination during the diamond's formation are the main cause of the red color. While there are some diamonds known as “purplish red”, or red with other color modifiers, a pure red diamond is seldom seen. If you are lucky enough to see a red diamond, you will notice that it does not resemble a ruby, garnet or other red gemstone in color. The coloring of a red diamond is somewhat sweeter. In some cases, diamonds that appear red to the eye are actually fancy deep or dark pinks.

Although the difference between a moderately dark red, a moderately deep pink and a red diamond is at times subtle, the stone and color saturation that results in the face-up appearance associated with a red is seldom seen. Every fancy color diamond, apart from red, has the prefix “intense” or “vivid” in their color grading scale. Red diamonds, though, are never noted as being “intense” or “vivid” because gemological laboratories consider the red color itself as “intense” or “vivid”.

Red diamonds are the rarest and most exotic diamonds which means they are also the most expensive and naturally the most desired.

A red diamond is so rare that there are jewelers and diamantaries that have rarely seen a red diamond, though everyone is aware of this diamond's uniqueness and its value.

Cutting and polishing of red diamonds    

Cutting and polishing of red diamonds requires the highest professional skills and experience.

Oren Seren is a manufacturer of natural red diamonds and can boast his exclusive collection of Red Diamonds (Fancy Red and Fancy Purplish Red). Red diamonds are distinctive in that most red diamonds are pique stones meaning that if the diamond is clean (VS-SI), it becomes even more valuable.

Tracing the destiny of red diamonds throughout the years it is possible to discover that these diamonds have been always chased by the most refined collectors inspite of the dramatic price increase. They have definitely always proven themselves to be an excellent investment.

Due to the rarity of natural fancy color red diamonds (in nature and on the market), some of our fabulous diamonds are not viewable online, however, information is available upon request. We prefer to keep these special diamonds on the side for those of you who collect diamonds (just like those people who put together art collections).

Structural Anomaly

Red diamonds, unlike some other fancy colors, get their color the natural way — if a deformation of the structure can be called “natural.” According to Stephen Hofer, renowned colored diamond expert and author of Collecting and Classifying Colored Diamonds, “Red diamonds are associated with type Ia — nitrogen-rich — diamonds.

Pressure is applied to these diamonds and it creates a graining that leads to the red color.” Hofer has made color in diamonds his life’s work. He has created his own proprietary system to classify and name color — that most elusive of qualities — in diamonds.

But even Hofer was surprised when he was asked to view a 0.59-carat diamond believed to have been found in an alluvial deposit in Brazil. The stone was shown to him by Robert Bogel, a gemologist, collector and connoisseur of diamonds. Bogel saw something very special in this pear-shaped diamond, something that he wanted confirmed by the “experts’ expert.” Hofer recalls, “I looked at the stone; I measured it two or three times. Not only was it stronger red than the 0.95-carat Hancock Red, but it was also more toward the pure red line, the line that defined absolute, pure red. The Rob Red diamond, as it became known, is the most saturated and purest red diamond measured visually and instrumentally to date in the world.” To accurately describe its qualities, he says, it deserves the title of “fancy intense red” because it exceeds the purity and saturation of the Hancock Red. Furthermore, it is VS1 clarity.  


Coaxing Color

Unlike pinks, which depend on the cutter’s skill to coax the maximum color from the rough material, reds come to the cutter as reds. Having said that, there is still a certain degree of magic that can be performed on the polishing wheel much of it having to do with achieving a darker tone that translates to a redder color. “You cut the stone to make the light bounce multiple times,” explains Hofer. “A radiant cut traps light and the light picks up more color. It is going to look redder.”


The trick, if one may call it that, is to bring out as much of the red that is inherent in the stone without killing its brilliance and beauty, and without sliding down the slippery slope until the essential tone of the stone changes. According to King, “Modifiers are added when the color falls out of the fancy red range. For example, if the stone is considered too dark and beyond what we have specified as the fancy red boundary, it then falls into the fancy brownish red grade range.”

But beauty, as well as color, is also in the eye of the beholder. We do not live under a specific light source used in the GIA lab or on some dealers’ desktops. We live under natural daylight, incandescent light and the dreaded fluorescent light, and our eyes tell us different things. David Shara of Optimum Diamonds says, “Your eyes never change and the diamond never changes, but the light source does.” This is why he says, for example, that stones that have been graded by GIA as “fancy red” may appear to have the brown modifier when viewed in other lights. The grade is correct under the given lighting conditions. At that point, it is up to the potential customer to decide, do I need the certificate or do I want the color that I see, the color that my years of experience tell me should be called “red”?

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