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Diamonds | Credit Jeweler

Diamond Facts

Diamonds and the four C’s

At CreditJeweler.com, we understand your need to feel secure in your online purchase. To help you decide on the perfect piece of jewelry for yourself or a gift for someone special in your life, here is some information to help you better understand the grading system for diamonds.

The four C’s, simplified:

Determine the carat. Weight is crucial, even with diamonds. The GIA explains that diamonds are weighed in metric carats, with one carat equaling 0.2 g. The carat is further divided into 100 points, so a 75-point diamond weighs 0.75 carats.

Identify the color. Color, or rather the lack thereof, is another virtue with diamonds; the less coloration, marked by slight tones of yellow or brown, the higher the value, asserts the GIA. The D-Z Color Grading Scale scores diamonds with a letter; D representing colorless and the most valuable, and decreasing in value down the scale to Z, meaning the most presence of color.

Categorize the clarity. Heat and pressure cause the unique markings on a diamond, either internal (inclusions) or external (blemishes), during its formation deep within the earth. The GIA Clarity Scale contains 11 grades, ranging from the very rare flawless (FL) diamonds to the very imperfect examples with obvious inclusions (I3). Most diamonds at CreditJeweler.com must exceed our strict standard expectations and still remain reasonably affordable.

Examine the cut. Fire, brilliance and sparkle are strong words commonly used to describe a diamond’s impact. Cut is an element that plays a large role in increasing the allure of a diamond, whether packaged in the traditional 58 facets of a round brilliant cut or visible in the beauty of a cushion, marquise or other cut. Although the GIA says that cut is difficult to analyze or quantify, there are three attributes that define it: brilliance (the total light reflected from a diamond); fire (the dispersion of light into the colors of the spectrum); and scintillation (the flashes of light when a diamond is moved).