Finding the perfect diamond isn’t always easy. These priceless stones are placed through a rigorous grading system, in i m sorry they space ranked based on their carat size, clarity, color, dimensions and more. For many of these elements, the grading is obvious—for example, many buyers would favor a colorless diamond come a yellow one—but there room other elements that really acquire into the “nitty-gritty.” If she buying your first diamond, this deserve to be overwhelming.

You are watching: Lines of symmetry in a diamond

Let’s take a watch at among these elements: Diamond Symmetry. Friend may have heard a jeweler talk about this, or seen it detailed on a Diamond Grading Report. However how important is diamond symmetry and also can you visually view it? Diamond symmetry is distinct because, unequal cut, color, or clarity, it’s difficult to differentiate between a diamond that has actually a the contrary rating of “good” versus “excellent”.

What Is Diamond Symmetry?

As the name implies, diamond symmetry merely refers to exactly how symmetrical a diamond’s facets and angles are. Is the culet (the pointed reminder at the bottom) centered with the table (the flat part on top)? space all the facets of same size and shape? carry out the crown and pavilion (the top and also bottom part of the diamond) line up perfectly? Gemologists look at these little details to recognize the symmetry of each diamond and also subsequently location them from negative to excellent.


The the contrary of your diamond might vary depending on your style and cut. When diamond cutters reduced a stone, they execute their best to retain as lot of a diamond’s carat (weight) together possible, while preventing inclusions that impact its value. To create a radiant diamond, or any other an elaborate cut diamond like a pear or heart shape, cutters sometimes have to sacrifice a stone’s symmetry.

How Symmetry changes A Stone

If a diamond is asymmetrical (i.e., if that is ranked together “fair” or “poor”) you deserve to tell. Light shows off the angles in a diamond, and also an asymmetrical cut can bring about minimal fire or dark spots in ~ the stone. In excessive cases, the rock may not also meet the criteria for the simple diamond shape—for example, you may see a ring diamond that looks much more like an oval!


“Excellent” cut .47 Ct Yellow Pear Diamond, with just “Fair” Symmetry

In most cases, however, the quality of the diamond cut will likewise dictate that is symmetry. This is why plenty of diamond buyers stick to stones v a “Very Good” or “Excellent” the contrary rating. The criteria outlined in the AGS and also GIA grading systems are a good rubric for finding a stone that meets your requirements.

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Does Symmetry affect Price?

Every facet or characteristic the is component of the diamond grading procedure will have an impact on that value. When Symmetry does not have the affect of color or Clarity because that example, diamonds v a “Fair” or “Poor” symmetry can be considerably less valuable. In addition, the impact Symmetry can have top top the price that a diamond deserve to vary based upon shape, with the largest visual and financial influence both affecting the round shape.