Diamond Tutorial


At Stewart Kuper Jewelers we want you to feel comfortable making educated decisions about your purchases. Comfort comes from knowledge. Our Diamonds are carefully selected to provide quality according to the G.I.A standards of the Four C’s.

Schedule an appointment with Stewart and he will educate you on every aspect of your diamond desires. Here is a brief background on the Four C’s of Diamonds:


In our opinion the most important trait in a diamond is its cut. The cut of a Diamond is determined by its specific angles and proportions. A fine cut Diamond will allow the light to refract through the stone at it’s maximum brilliance, making it appear alive and scintillating.


Diamonds can be found in a wide variety of colors. The G.I.A (Gemological Institute of America) color range goes from Colorless (D) to Noticeably Yellow (Z), having all the grades of yellow in between.

In the Diamond Industry a color scale has been developed using letters, where the “D” is the perfect colorless and most valuable diamond. Colored diamonds (blue, red, purple, yellow, etc.) are called Fancy Diamonds.


The Clarity of a diamond refers to its internal imperfections known as inclusions. The less inclusions a diamond has the more rare it is. There is a scale to grade the clarity of a diamond.

In this scale FL (Flawless) is the diamond free from inclusions and I 3 (Included 3) is the diamond that has large or numerous inclusions which are very easily visible and reduce a diamonds brilliance.


Carat is the unit of measurement of a diamonds weight. The carat weight is important when determining the value of a diamond. The higher the carat weight of the diamond, the more unique it becomes.