The cut refers to the proportions of the diamond, regardless of it’s shape. Each diamond gains its brilliance and scintillation from the polish and symmetry of the facets of the and how they are proportioned. As light enters through table of a well proportioned diamond, it is reflected and will disperse the maximum amount of light back through the table as it exits the stone. The proportions are measured by the ratio of each section of a diamonds design.
Have you ever wondered why two seemingly similar stones do not give off the same brilliant sparkle?
A correctly cut diamond sparkles with beauty while a diamond cut too shallow or too deep allows light to escape through the diamond’s bottom and does not allow the maximum beauty of the diamond to be realized. When working with your Orr’s associate ask about the cut, we could go on for hours.
The Gemological Institute of America (GIA) rates the body color of diamonds from D (colorless) to Z (light yellow) with the exception of fancy-color diamonds. Color refers to the lack of color within the diamond.
D-E-F -Colorless – Boasting the industry’s highest color rating, these diamonds are completely absent of body color. These are the purest and most rare of all diamonds.
G-H-I-J – Near Colorless – Although there may be a slight distinction between a G and a J rated stone, it is difficult to detect any color in near colorless diamonds with out comparing the stones side by side. A well cut, near colorless diamond will “face up” better than a diamond with an average cut.
K-L-M – Faint Yellow – This is where the untrained eye may start to pick up the warming effect within the body of the stone. The stone appears faint-yellow.
M and lower – Beyond M the diamond appears warmer and warmer, however a warm yellow tone does not take away from the beauty of the diamond. The presence of color has no affect on the light performance and sparkle of a diamond. Remember, it is the cut which controls how the light is best dispersed. The presence of color is simply the tone of the stone.
The clarity of a diamond is determined by the amount and location of flaws, or blemishes, in the diamond when viewed under 10 power (10x) magnification. Gemology Institute of America (GIA) rates clarity grades in diamonds from Flawless to Imperfect 3 (see chart). 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. Remember that the diamond has to be magnified under 10 power to see these inclusions. Buying a diamond with a few inclusions that are not clear to the eye can allow you to get more for less but too many inclusions can alter the brilliance dramatically to even the most untrained eye.
This is the weight of a diamond measured in carats. As the carat weight of a diamond increases so does its rarity and therefore its price. One carat is divided into 100 “points,” so that a diamond of 75 points weights .75 carats.
Two diamonds can be of equal carat-weight, but their value can differ greatly due to their cut, color, and clarity. Look at the cut… test the color… ask about the inclusions.
If you want to learn more about the 4 C’s talk to us, we love talking about our rocks.