4C DIAMOND

Diamond Cut


The cut of a diamond not only refers to the diamond’s shape, it also refers to how effectively the diamond returns light back to the viewer's eye. A well-cut diamond will appear very brilliant and fiery, while a poorly cut diamond can appear dark and lifeless, regardless of its color or clarity. Not only do well-cut diamonds appear more brilliant, they also tend to appear larger than other diamonds of the same carat weight. An "ideal" diamond has both increased brilliance and diameter relative to more deeply-cut diamonds.


Ideal cut diamonds


An Ideal Cut Diamond is a round, brilliant, or princess cut diamond that is cut to ideal proportions and angles, and has excellent polish and symmetry ratings. An Ideal Cut Diamond is perfectly proportioned to refract light, producing that fire and brilliance up through to the table and crown. Aksaja Diamond offers a nice selection of Ideal Cut Diamonds


Hearts and Arrows


Seen from above, a Hearts and Arrows diamond shows an arrow pattern. When displayed on its pavilion side, the diamond presents the eye with 8 hearts with tiny 'v' shapes. Genuine Hearts and Arrows have these patterns visible at a single glance, indicating that the diamond has perfect optical symmetry. Hearts and Arrows diamonds are sold under many names - Hearts on Fire and Leo Diamonds are two popular examples. At Aksaja Diamond, we take pride in presenting only the finest Hearts and Arrows diamonds money can buy - every single diamond we sell is cut and polished at 100X magnification.


Understanding Brilliance, Dispersion & Scintillation


A well-cut diamonds exhibit three different properties: brilliance, dispersion and scintillation. As light strikes a diamond's surface, it will either reflect off the table of a polished stone or enter the diamond. The light that is reflected off the diamond is known as the diamond's brilliance. As light travels through a stone, some of the light rays are separated into flashes of color. This is known as dispersion. The result of dispersion—the separation of white light into its spectral colors— is known as fire. Scintillation is flashes of color that are viewable as an observer moves a diamond back and forth.

Note: Slide Up To View Different Color Diamond.

Diamond Color

When shopping for a diamond, it is generally preferred to choose a stone with the least amount of color possible. Diamond color is graded on a scale from D-Z and is divided into five broad categories (colorless, near colorless, faint, very light and light). Diamonds come in all colors of the spectrum. The predominant color you see in a diamond is yellow, which is caused by the trace element nitrogen.

Generally, when comparing color between two diamonds, the diamonds need to be at least two color grades apart to even begin to see a difference. As you can see from the images below, when diamonds are in the face up position it is almost impossible to see any color. When viewing the diamond from the side profile, you may start to detect some color; however, diamonds are admired for their beauty from the face up position and not the side.

Colorless Diamonds (D-F)

Diamonds within the colorless range are the most rare and valuable of all those on the color scale. D/E color stones display virtually no color, whereas F colored diamonds will display a nearly undetected amount of color when viewed face down by a gemologist.

D Color
E Color
F Color

Near Colorless Diamonds (G-J)

Diamonds within the near colorless range appear colorless in the face up position, but do display a slight amount of color when viewed face down against a perfectly white background. This trace amount of color will be undetectable to an untrained eye once the diamond has been mounted. Near colorless diamonds offer a tremendous value for their price.

G Color
H Color
I Color
J Color

Faint Color Diamonds (K)

Diamonds within the faint color category may show a slight hint color when viewed in the face up position; however, these are another wonderful option for those who are not sensitive to color. Some even love the color scheme that is displayed from these diamonds.

K Color

 

While the most predominant color found in a diamond is yellow, it’s not uncommon for a diamond to take on a brown color. This is thought to be caused by internal graining, which results from structural irregularities often in combination with an impurity like nitrogen.

K-Faint Brown
K-Faint Brown
K-Faint Brown
K-Faint Brown

Note: Slide Up To View Diffrent Color Diamond.

Clarity


Diamonds receive the FL (flawless) grade when there is no discernible inclusion or blemish that causes interference with the passage of light through the stone. At AKSAJA, we offer diamonds that achieve a grade of VS2 and above. VVS and VS graded diamond are highly expensive whereas SI1 and SI2 graded diamonds are more affordable.


A grading system has been established by the GIA for measuring the type and size of these impurities:

FL , IF

Flawless and internally flawless

VVS1, VVS2

Very Very slight inclusion that is hard to view under 10x magnification

VS1, VS2

Very Slight inclusions that are visible under 10x magnification and may not be visible to the naked eye

SI1, SI2

Slight inclusions that are visible under 10x magnification and may not be visible to the naked eye

Diamond Weight

Carat is a term that refers to the weight of a diamond. Prior to the twentieth century, diamonds were measured using carob seeds, which were small and uniform and served as a perfect counter weight to the diamond. The word "carob� is the origin of the word "carat" that we use today.


Diamond Size and Diamond Carat Weight
The size of a diamond is proportional to its carat weight. When rough diamonds are cut and polished into finished diamonds, up to 2/3 of the total carat weight may be lost. Since larger rough gems of high quality are found less frequently than smaller rough gems of high quality, a single two carat diamond will be more expensive than two one-carat diamonds of the same quality.


In the United States, the majority of diamonds used in jewelry and sold as loose diamonds are one carat or less in weight. The average engagement ring diamond sold in the U.S. is less than 1/2 carat in weight.


A diamond will increase in weight much faster than it increases in actual "face-up" diameter. For example, while an ideal cut one-carat diamond measures approximately 6.5mm in width, a diamond of twice its weight measures only 8.2mm wide—less than a 30% increase. The graphic to the left helps illustrate this point.


Which Carat Weight Is Right For You?
This question has no direct answer. It is a choice that depends on personal preference and budget. When looking at a diamond engagement ring, what is most visible is the size of the surface area on the top of the diamond. It is difficult to measure a diamond’s carat weight simply by looking at it. Although carat weight influences cost quite a bit, it is advisable to focus on diamond cut and diameter.