What Is The Most Expensive Diamond Cut?

What Is The Most Expensive Diamond Cut?

When it comes to diamonds, their cut significantly influences both their beauty and their value. Among the myriad of cuts available, the round brilliant cut stands out as the most expensive. This blog will delve into why the round brilliant cut holds this title and compare it to other popular diamond cuts, providing detailed insights into each.

Factors Influencing Diamond Cut Prices

Material Loss

One of the main factors influencing the price of a diamond cut is the amount of material lost during the cutting process. Cuts that result in significant material loss, like the round brilliant cut, tend to be more expensive.

Demand and Popularity

The popularity of a diamond cut plays a crucial role in its price. Cuts that are in high demand, like the round brilliant cut, typically command higher prices due to their desirability.

Complexity of the Cut

The skill and precision required to achieve a particular cut also affect its price. Cuts that require intricate workmanship, such as the round brilliant cut, tend to be more costly.

The Round Brilliant Cut: A Cut Above the Rest

Superior Brilliance and Fire

The round brilliant cut is engineered to maximize light reflection, resulting in exceptional brilliance and fire. It has 58 facets, meticulously arranged to enhance the diamond's sparkle. This intricate design allows the diamond to reflect light from every angle, creating a dazzling display of brilliance that is unmatched by other cuts.

High Demand and Popularity

The round brilliant cut's popularity stems from its timeless elegance and versatility. It is the preferred choice for engagement rings, earrings, and other jewelry pieces. This widespread demand contributes significantly to its high price. The round brilliant cut has remained the most sought-after diamond shape for decades, making it a staple in the jewelry market.

Precision and Skill Required

Creating a round brilliant cut diamond requires a high level of expertise. The cutting process involves precise calculations and skilled craftsmanship to achieve the perfect symmetry and proportions. This labor-intensive process, combined with the significant material loss during cutting (as much as 50% of the rough diamond), adds to the overall cost.

Price Range

Due to these factors, round brilliant cut diamonds command a premium price. On average, they can be 25-30% more expensive per carat than other diamond shapes. The combination of superior light performance, high demand, and the complexity of the cutting process makes the round brilliant cut the most expensive diamond cut.

Comparing Other Popular Diamond Cuts

The Princess Cut

Princess cut diamonds are generally less expensive than round brilliant cuts. The cutting process is more efficient, with less material loss, contributing to a lower cost. However, high-quality princess cut diamonds with excellent clarity and color can still command high prices.

The Emerald Cut

Emerald cut diamonds are typically less expensive than round brilliant cuts. The step-cut facets require less precision and result in less material loss, which lowers the cost. However, high-quality emerald cuts with excellent clarity can still be quite valuable.

The Cushion Cut

Cushion cut diamonds are moderately priced compared to round brilliant cuts. Their popularity is growing, but they still generally cost less due to the easier cutting process and lower demand.

The Marquise Cut

While the marquise cut enhances the perceived size of the diamond, it is generally less expensive than round and princess cuts. Its popularity is lower, and the cutting process is less complex, contributing to its lower cost.

The Heart Cut

Heart cut diamonds can be expensive due to the precision required to achieve the perfect heart shape. However, they are not as costly as the round brilliant cut, primarily due to their lower demand.

The Asscher Cut

Asscher cut diamonds are typically priced similarly to emerald cuts, focusing on clarity and quality. They can be quite valuable, especially for high-quality stones, but generally cost less than round brilliant cuts.

Other Considerations Regarding the Round Brilliant Cut

While the round brilliant cut is renowned for its exceptional brilliance and high price, there are several other factors to consider when choosing this popular diamond shape. Understanding these aspects can help you make an informed decision and appreciate the nuances that contribute to the round brilliant cut's allure.

Symmetry and Proportions

Importance of Symmetry

Symmetry is crucial for the round brilliant cut because it directly affects the diamond's light performance. A perfectly symmetrical round brilliant diamond reflects light evenly, maximizing its brilliance and fire.

Ideal Proportions

The ideal proportions for a round brilliant cut include specific measurements for the table size, depth, crown height, and pavilion depth. These proportions ensure that the diamond achieves optimal light reflection and dispersion, enhancing its overall beauty.

Cut Quality Grades

GIA Cut Grades

The Gemological Institute of America (GIA) grades the cut quality of round brilliant diamonds on a scale from Excellent to Poor. An Excellent cut grade indicates that the diamond has optimal proportions, symmetry, and polish, resulting in the best possible sparkle.

Impact on Price

The cut quality grade significantly impacts the diamond's price. Round brilliant diamonds with Excellent or Very Good cut grades command higher prices due to their superior light performance and visual appeal.

Setting Considerations

Enhancing Brilliance

The setting you choose for your round brilliant diamond can significantly impact its appearance. Prong settings, especially those with four or six prongs, are popular choices as they allow maximum light to enter the diamond, enhancing its brilliance.

Protecting the Diamond

While round brilliant diamonds are generally durable, choosing a setting that provides adequate protection is essential. Bezel and halo settings offer additional security, protecting the diamond's edges from potential damage while adding to its visual appeal.


In conclusion, the round brilliant cut is the most expensive diamond cut due to its unmatched brilliance, high demand, and the intricate skill required to achieve its precise facets. While other cuts like the princess, emerald, cushion, marquise, heart, and Asscher each offer unique beauty and appeal, they generally come at a lower price point compared to the round brilliant cut.

Choosing the right diamond cut depends on personal preference and style. At Wm. Harold & Sons, we are dedicated to helping you find the perfect diamond that reflects your unique taste and fits your budget. Visit our store in Newport Beach or contact us to explore our exquisite collection of diamond jewelry.

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