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Diamonds, as one of the more precious stones, have a distinctive sparkle that makes them attractive. There are numerous jewelry selling sites where you can buy a diamond. However, if you are looking for diamond buyers in Kansas City, Diamond Banc is an excellent choice. Sellers and buyers of diamonds consider the facets and their alignment in making their decision. While the diamond should not be chosen or rejected based on symmetry alone, all the facets must be in line to support its appearance.


Want to understand more about diamond symmetry and why it matters? Consider reading this article to the end. You will discover detailed information concerning diamond symmetry, including its importance and its different grades.

What Is Diamond Symmetry?

Mathematically, the line of symmetry refers to the division of an object into different but equal parts. Diamond symmetry refers to how various facets of the diamond align and intersect with each other perfectly. Thus, the asymmetrical diamond should have its facets perfectly aligned with each other.

Why Does it Matter?

You probably are wondering why diamond symmetry matters. The first reason why it matters is the fact that it delivers a visually pleasing presentation. With poor symmetry, the light will enter at poor angles, reducing the diamond’s sparkle. Also, when coupled with other features like clarity, color, shape, and facets, it impacts value.

Different Grades Of Diamond Symmetry

  • Excellent Symmetry: No symmetry flaws identifiable under 10x magnification.

  • Very Good Symmetry: It is challenging to identify minute defects under 10x magnification

  • Good Symmetry: Under 10x magnification, noticeable flaws are identifiable

  • Fair Symmetry: Flaws are noticeable by the naked eye and under 10x magnification

  • Poor Symmetry: Noticeable flaws by the naked eye 

Factors Affecting The Symmetry Grade

  • Out of Round: A diamond is said to be out of round if it deviates from the usual round shape where the width varies from its length. An asymmetrical diamond has all its sides equal. However, in excellent symmetry, 0.9% variance is acceptable.

  • Table Off-Center: When one edge of a table is further from the outer edge of the diamond than others, it is considered off-center. An excellent symmetry should have a deviation of not more than 0.6%.

  • Culet Off-Center: When the culet deviates from the pavilion’s center, it is considered off-center. Any diamond with an off-center visible to the naked eye should be disregarded. If the deviation is more than 0.6% of the average diameter, it should be very good symmetry.

  • Table Alignment: The misplacement of the table facet in the opposite direction. It is computed as the distance between the table center and culet center expressed as a percentage of the average diameter. A distance that is above 0.9% is regarded as very good symmetry.

  • Crown Height Variation: Crown height differs from one diamond to another.

  • Variation of the Crown Angle: This might occur in cases where the crown angles are unequal. It is the measure of the degree of variation between the maximum and minimum angle.

  • Pavilion Depth Variation: It refers to the variation of the pavilion depth.

  • Variation of the Pavilion Angle: It occurs when the pavilion angles are unequal. It is usually relative to the diamond facets being off-center. A variation of above 0.9% is downgraded.

  • Variation of the Girdle Thickness: It is the variation of the girdle thickness at a bezel position which is the point where the crown meets the girdle. A variation of above 1.2% of the average diameter is considered very good symmetry.

  • Table Size Variation: It refers to varying table size measurements. It is common where the table is not octagonal and is calculated by the difference between the maximum and minimum table size value.

How To Evaluate Symmetry?


Since a perfect diamond should be symmetrical, you probably wonder how a diamond’s symmetry is evaluated. One should consider various variables when evaluating its symmetry. Below are some of the common factors that jewelry buyers consider. However, it is not possible to evaluate them from a jewelry selling site. One has to visit the store; for instance, diamond buyers in Kansas City can visit the Diamond Banc office.

  • Facets Alignment: How well do the diamond facets align with each other? An asymmetrical diamond has all its facets aligned perfectly. Any variations raise the question of its symmetry.

  • Proportionality of the Facets: How regular or proportionate are the shapes of the diamond facets? The shapes of a diamond facet are supposed to be proportional to each other.

  • Round Shaped: When the diamond is observed from the top, it appears round in shape? If not, the probabilities are that it is not symmetrical.

  • The diamond’s table should be proportional and centered too. 
  • The diamond culet should be centered.

Importance Of Diamond Symmetry

You are probably wondering why symmetry in diamonds is such an important topic. However, what makes a diamond attractive is its ability to sparkle when light reflects on it. Thus, in this section, we evaluate the significance of ensuring your diamonds are symmetrical.

  • It Sparkles and Shines: A symmetrical diamond reflects the light to maximize the sparkle of the diamond to the viewer or buyer. For non-symmetrical diamonds, the variation is visible to the naked eye and sparkles less.

  • It boosts the quality of a higher clarity grade diamond. A very good or excellent diamond grade that is symmetrical is more desirable. However, if a diamond is of low grade, its symmetry does not add to its value.
  • Similarly, a flawless diamond that is non-symmetrical can spoil the sparkle and its beauty.
  • Influences Price: A symmetrical diamond has better eye appeal. A diamond with more eye appeal is more desirable and can be more expensive.

Factors To Consider Before Buying A Diamond


  • Diamond Shape

The shape of your diamond will directly impact the design of your ring. While a round brilliant is the most common shape for engagement rings, no shape is better than the other. In other words, the shape will depend on personal preference. Deciding on the shape will help narrow down the search for diamonds.

  • Decide the Carat Weight.

Decide on a carat that your partner is expecting. Carat affects the size of the diamond.

However, remember that the higher the carat weight is, the rarer it is and the higher the price of the diamond ring.

  • Cut Quality

One of the things that enhances a diamond’s beauty is a quality cut. While there are no standardized cut grades outside of the modern round brilliant cut, it is recommended that one considers only excellent and ideal cuts.

  • Color

For diamond color, the goal is usually to choose jewelry that appears glassy white (colorless). Also, consider that the shape of the diamond affects the color density.

  • Clarity

One must consider the internal purity of the diamond before purchasing it. Consider the inclusions and blemishes of characteristics in determining the diamond’s purity. Inclusions refer to the tiny imperfections in most diamonds that have ever been mined across the globe. However, blemishes refer to the external imperfections caused by wear and tear. The lower the impurity levels, the higher the clarity. If you consider buying a diamond engagement ring and want to get the full value of your money, go for an eye-clean diamond.

  • Ring Style

When buying a diamond ring, most customers often consider only the center diamond rather than the overall style. However, having a ring design that perfectly fits your personality and style is essential. Thus, while choosing a ring, consider your partner’s style and preference too.

  • Make comparison

After considering other factors, you must compare different diamond stones and decide on the best one to buy. When comparing, you should consider the brilliancy of the diamond, eye-cleanliness, and price. Other factors that could affect the diamond value include symmetry, fluorescence, and polish.

  • Certificate Verification

For quality diamonds, certification is essential. Consider GIA and AGS certified diamonds only, as other certifications have had some shortcomings. If you are considering ordering online from jewelry Selling Sites, ensure you check out their certificate too. If the information is not online, consider calling or emailing them to be on the safer side.

  • Get the Opinion of an Expert

Before making that huge decision of purchasing a diamond, consider consulting with experts. They will give you honest feedback on the best option for you.

Why Choose Diamond Banc To Sell Your Diamonds?

Are you looking for credible diamond buyers in Kansas City? Consider Diamond Banc, part of a trusted jewelry business that has been in operation for many decades. We have an online jewelry selling site that you can access from anywhere.

Contact us today!

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