DND Jewelers’ expert GIA Graduate Gemologists would love to help you choose the perfect diamond. We believe that education is key to making an informed purchase. We promise to provide you with a short but informative diamond education conducted by our in house GIA Graduate Gemologists.

How to Select A Diamond

When selecting a diamond, pay close attention to the “four C’s” that determine the value and quality of a diamond: Carat, Color, Clarity and Cut.


A diamond’s weight is measured in Carats. Since one carat equals one hundred points, a fifty-point diamond is one-half carat in weight.  In general, the higher the carat weight, the larger the size. The size of a diamond is the easiest quality for an inexperienced buyer to judge. All else being equal, diamond price increases with diamond carat weight, because larger diamonds are more rare and more desirable. But two diamonds of equal carat weight can have very different values (and prices) depending on three other factors of the diamond 4Cs: Clarity, Color, and Cut.


A diamond’s Color ranges from “D” which is no color, to “Z”, which is a light yellow. The closer a diamond comes to being colorless, the more valuable it is.  A diamond with “D” color on the color grading scale has perfect color.  When deciding on the color of your diamond, you must take into consideration the metal in which the diamond will be set in (i.e. platinum, yellow gold). Selecting a diamond to compliment the chosen metal will enhance the overall appearance of your diamond in its setting.


The Clarity of a diamond is determined by the visibility of any flaws in or on the surface of a diamond.  Almost all diamonds contain naturally occurring internal characteristics called inclusions. The size, nature, location and number of inclusions determine a diamonds clarity grade and affects the value of a diamond; the fewer inclusions in a diamond the greater its value.  The GIA scale provides a universal way to communicate a diamond’s clarity grade.  The clarity grade corresponds to the inclusions found in a diamond. A diamond expert should have a trained eye and be able to judge a diamond’s clarity even in the absence of magnification or a gem scope.

GIA Clarity Grading Scale

Flawless (F)Internally Flawless (IF)VVS1VVS2VS1VS2SI1SI2I1-I3
No visible InclusionsMinute InclusionsMinor InclusionsNoticeable - Obvious Inclusions


Cut is not the same as shape; shape is a matter of personal preference, but the quality of the cut determines whether light will be properly reflected through the diamond and the color properly dispersed. An ideal cut diamond is cut to precise calculated proportions to produce the maximum brilliance and symmetry.  Diamonds that adhere to these precise proportions are truly a rare find.

DND Jewelers recommends that when you begin shopping for a diamond, find a jeweler you can trust and one that uses the GIA grading scale to define diamond quality.  This will help to avoid confusion and maintain uniformity.  Next, decide on how much you want to spend.  Discussing a price range with your jeweler will allow for flexibility in terms of the size and quality of your diamond and may get you a better value for your money.

Congratulations on your decision to purchase a diamond!