The number, position, kind, color and prominence of inclusions contained in the diamond determine the grade of clarity. Most diamonds contain very tiny birthmarks known as inclusions. An inclusion can interfere with the light passing through the diamond. The fewer the inclusions, the more beautiful the diamond will be.
Grades range from flawless (diamonds which are completely free from blemishes and inclusions) to the included 3 (diamonds which possess large, heavy blemishes and inclusions that are visible to the naked eye).
THE CUT ENHANCES THE DIAMOND’S POWER TO PICK UP AND REFLECT LIGHTS.
Every diamond regardless of its shape gets its brilliance and scintillation by cutting and polishing. The diamond functions to allow the maximum amount of light that enters through its top to be reflected and dispersed back through its top. Understanding the cut of the diamond is a key element to broadening your diamond education; come see us today in Honolulu to learn more.
WIDTH AND DEPTH
Light traveling through a shallow cut diamond is lost at the bottom of the stone making the diamond appear lifeless.
Light traveling through a diamond that is cut too deep escapes out of the sides of the diamond; thus, darkening all or sections of the stone.
Light traveling through an ideal cut diamond bounces back out the top of the stone; thus, bringing its ultimate brilliance into view.
Symmetry is a term that refers to the alignment of a diamond’s facets, which are the flat and polished surfaces. The overall symmetry of the facets allow for a more even and balanced display of light.
The surface of the facets should be smooth and polished so that light can pass through them.
Carat in a diamond is a weight indicator, where 1 carat equals 0.2 grams in weight. The smallest weight in diamonds is called a “point”, which equals 1/100 of a carat. So if a diamond is categorized as a ¾ carat, it weighs between 70 points and 89 points. The ½ carat bracket would weigh 50 points to 69 points.
The term “Carat” originated from the seeds found on the Carob tree. Miraculously, these seeds weigh an exact 0.2 grams, and were used by gem traders for hundreds of years as the most efficient means of determining a gem’s weight and value.
When buying from a diamond dealer, the value of a cut and polished diamond is based on the rough it was cut from. It is essential to understand this concept in order to understand why prices vary when buying a diamond of similar weight, color, clarity but different shape. In most cases, a round diamond is 20%-40% more expensive than any other shape of the same carat, color and clarity. The reason is quite simple. Diamond rough is normally found in 4 types of crystalline shapes: Octahedron, Dodecahedron, Rhombododecahedron and Cube.
In order to cut a round diamond from one of these crystalline shapes, much of the weight would be lost. Many other shapes would salvage more weight from the rough diamond. However, the cost of the rough remains the same. Let’s take a 3 carat rough Octahedron as an example. If we were to create a round brilliant diamond, we would lose roughly 60% of the rough weight, with a final product of a 1.20 carat. Now let’s rewind and re-cut that same 3 carat rough into a princess cut diamond. In most cases when cutting the appropriate shape in respect to the rough diamond, a cutter would lose approximately 40% of the original weight, resulting in a 1.80 carat Princess cut diamond. The cost of both diamonds is the same, and so is the color. The clarity might differ, but let us assume they’re the same as well. Since the cutters and dealers work on a tight schedule with specific percentages, both these diamonds should be very similar in pricing.
This idea applies to a diamond’s overall cut grade as well. A 1 carat with a fair cut grade could be cut down to a 0.90 carat with a better cut grade. In most cases, the pricing would be very similar.
COLOR GRADING REPRESENTS A FUNDAMENTAL ELEMENT OF A DIAMOND.
Most diamonds fall into the D-Z color scale which represents the lack of yellow or brown in the diamond. ‘D’ color is the whitest diamond , and ‘Z’ being the most yellow in the regular scale(After ‘Z’ we reach the ‘Fancy’ colored diamonds). The most valuable diamond in this scale is the white ‘D’ color. Generally, as we go down the scale the value of the diamond drops until we reach the ‘Fancy’ range.
There are several reasons as to why the value of the diamond changes according to its color. One obvious reason is taste and preference. White diamonds strike our eye with more brilliance, making them the highest in demand. Another reason is the elements traced within the diamond. During a diamond’s formation, various elements and particles are captured. The most common element present in a diamond is Nitrogen, which normally reflects yellow or brown colors. The lower the presence of this element, the less yellow the diamond appears, and therefore is more valuable.