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What Determines the Value of a Diamond?

Time and time again people ask: “What determines the value of a diamond?”

For instance, the value of a diamond is determined by the 4Cs of diamond grading. Diamonds are a miracle of time. Furthermore, no two are exactly alike. GIA developed an agreed-upon standard to judge diamonds. The Gemological Institute of America (G.I.A.), created the first, and now globally accepted standard for describing diamonds: Color, Clarity, Cut, and Carat Weight. As a result, the 4C’s of diamond quality is the most widely accepted method of determining the quality of a diamond, anywhere in the world.

The 4Cs

Diamond Cut-

Cut- The most important of the 4Cs is Cut. This refers to a diamond’s proportions and not shape. Also, the quality of a diamond’s cut determines the amount of fire, sparkle, and brilliance the diamond exhibits. Depending on the laboratory report of a particular diamond, it may include a cut grade from “Excellent” to “Poor.” 

Diamond Color- 

Color– This means a diamond’s absence of color. Most “colorless” or “white” diamonds contain trace amounts of yellow, brown, or gray color. The less color in a diamond, the more desirable and valuable it is. The GIA color diamond scale is from “D” to “Z”. 

  The “D” color is a diamond with no detectable color. On the other hand, the “Z” color means that a diamond has more color. Any diamond beyond the Z color grade is a fancy color diamond and is evaluated on a different color scale. A color grade impacts the price of a diamond. The difference between several color grades is difficult to discern to the untrained eye. Also, the proper way to determine color is by viewing the diamond upside down in a controlled environment.

To read more about Clarity and Carat, click here.

As a result, the creation of the 4C’s means two very important things: 1) Diamond quality could be communicated in a universal language. 2) Diamond customers could now know exactly what they were about to purchase. Having said that, seek out advice from a professional jeweler. A local jeweler will have your best interest in mind. It is to the jewelers’ advantage to properly educate the customer about diamonds and other gemstones.

Furthermore, determine what is relevant to you. Compare shop. Look at several diamonds in your price range. Afterward, determine what is best for your pocketbook. Other resources are your family members and friends. They are always happy to share their experiences with you – good and bad. We suggest you learn more about choosing a diamond that is right for you.

I am always here for additional questions. Feel free to contact me at Or call as well – 512–231–8502.

How do you buy a diamond in-store? Learn more here.

What determines the value of a Diamond?
How-to-Buy-a-Diamond-in-a-Store-GIA Diamond Buying Guide

Joseph R. Villarreal, Graduate Gemologist (GIA)
Jewelers of America Certified Senior Management Professional
Villarreal – Diamond Engagement Rings & Fine Jewelry – Austin, TX

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