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Syracuse, New York 13202




Diamond Quality & Education

The quality of an M. Lemp Jewelers diamond is evaluated using the 4 primary characteristics known as the "4 C'S" - Cut, Color, Clarity and Carat. There is a wide range of diamond sizes and qualities available within any given budget. The challenge is to determine which of the “4 C’s” is most important to you in order to narrow this range so you can make the best choice.

The "4 C's"


The cut of a diamond determines its brilliance and sparkle. Cut is important because it is a direct indication of the brilliance and sparkle of a diamond. Diamonds with perfect clarity or color but which are badly cut can appear dull and lifeless, but finely cut diamonds can in many cases be brilliant even if with average or below average color and clarity. The better the cut, the more rare and the more valuable is the diamond.


The color of a diamond results from light passing through chemical impurities and/or defects is the crystalline structure. These inclusions alter the amount of light absorption pattern so that color is visible to the human eye. While diamonds come in many colors and many hues, the most common color and hue is yellow. The amount of yellow hue is graded according to a scale which ranks rewards the lack of color with the highest letter grades and which ranges from D (colorless) to Z (heavy yellow). Diamond whose color is beyond Z are denoted as "fancy" diamonds and are graded using their own scale and terminology. The purer and more intense the color, the rarer and more valuable is the diamond.


The clarity of a diamond is a measure of the number and type of inclusions within the diamond and on its surface. The fewer the inclusions visible under a 10X magnifier, the higher the clarity grade which ranges from flawless to heavily included..


The term "carat" refers to the weight and size of a diamond. The value of a diamond rises exponentially with its size. Most diamonds fall in between 0.01 carat and 1.00 in size. Put another way, that range is between a hundredth of a carat and a full carat in weight.

Other Characteristics

Fluorescence is another characteristic of a diamond that should be considered when you go to buy. It refers to the blue light, which is emitted by some diamonds under black lights or UV lights. Some diamonds emit a blue glow, while others emit a softer glow, and some diamonds do not glow at all. Fluorescence is a complicated characteristic as it can either decrease or increase the worth of a diamond. For the colorless diamonds from the scale of D, E, and F, Fluorescence is not that beneficial. However, the stones that have a yellow hue as J, strong or medium Fluorescence helps in making it appear white. Consider all the above stated factors when you go to purchase your diamond, and be sure to ask your M. Lemp Jewelers diamond expert questions that you feel are important. They are there to help you make the process of selecting a diamond easier.