What’s the Most Expensive Diamond Cut? (2024)

Not all diamonds are created equal, and shopping for them can be overwhelming. Whether you are a first-time diamond buyer looking for an engagement ring on a limited budget or have saved a considerable amount of money for a lavish 25th-anniversary gift, you will need a basic understanding of how diamond cuts are graded to make a sound buying decision.

Diamond cuts are part of a group of characteristics known as the 4 C’s: cut, carat, color, and clarity. Many people rank cut as the most important of the 4 C’s; we will explain them all below.

Read on to learn more about making informed diamond buying decisions before we reveal the most expensive diamond cut (spoiler alert: it’s also the most in-demand cut, so chances are it may be the type of diamond you seek!)

What Are the 4 C’s in Diamond Shopping?

The Four Cs are the recognized industry standard when it comes to what you should focus on when buying diamond jewelry.


Carat refers to the metric weight of the diamond (not its physical dimensions, a common misconception!) The weight system used for measuring diamond carats has a metric weight defined as 200 milligrams, and then the carat is subdivided into 100 points. This means the measurements are drilled down to the hundredth decimal.


The most expensive diamonds are colorless, but the naked eye cannot see color variations in many cases. The D-to-Z color scale, first introduced in the 1950s, has the highest graded or “D” diamonds at colorless, and at the bottom of the scale, the Z diamonds will tend to have a yellowish or brownish hue.


What’s the Most Expensive Diamond Cut? (1)

Gemologists use a clarity scale to rate the diamond’s imperfections, which exist due to the way the stone is formed under intense heat and pressure. Using 10x magnification, diamonds are assessed for the number of imperfections, size, and location.

There are six categories on the diamond Clarity Scale:

  • Flawless
  • Internally flawless
  • Very very slightly included
  • Very slightly included
  • Slightly included
  • Included


The cut of a diamond is often the most important consideration of the 4 C’s, greatly impacting the stone’s value and price.

Sometimes people mistakenly assume “cut” is the same as shape; however, the two are indeed different. The cut refers to the proportion of the stone’s dimensions rather than its visible “shape” (such as a pear).

The stone's cut determines the diamond's ability to reflect light, and even diamonds with high clarity and color grades can be negatively impacted by a poor quality cut, resulting in stones that appear dull and lack brilliance.

Gemologists rate diamond cuts as Excellent, Very Good, Fair, and Poor. And any reputable jeweler should be able to answer questions about how the diamond you are considering is graded as far as cut goes or any other characteristics named above!

What Is the Most Expensive Diamond Cut?

When you think about the cut of a diamond and what makes it expensive, you might also think of it using some familiar movie editing terminology: “What is left on the cutting room floor?”

Based on what is wasted from the rough stone, the round brilliant is the most expensive diamond cut. Over half of the rough stone is typically wasted to achieve this cut. So the consumer is, effectively, paying for the amount of stone wasted just as much as what happens to land on the ring.

What’s the Most Expensive Diamond Cut? (2)

Round brilliant diamonds are far and away the favorite choice for engagement rings and are also seen often in other pieces such as earrings or necklaces. What makes this cut so desirable is the sparkle factor: no other cut boasts the same brilliance as this type of diamond. And even in a consumer market filled with some of the most intricate jewelry designs imaginable, a simple round brilliant diamond engagement ring never seems to go out of style.

While a round brilliant diamond costs more than other cuts, it does not necessarily mean you will need to break the bank to purchase one. The other characteristics (carat, clarity, color) will also play a role in the price.

To stay within your budget, you might sacrifice some color quality to afford a round brilliant cut. Or you might consider how a “halo effect” can add more of a sparkle factor to smaller diamonds and opt for a more intricate setting than the simple round diamond on a plain metal band.

One of the great advantages of the round brilliant cut is its ability to conceal inclusions. Some imperfections that lower the price of a stone may not be visible to the naked eye.

How Can I Save Money When It Comes to Diamond Cut?

While round brilliant diamonds are certainly stunning and wildly popular for good reason, plenty of other diamond cuts still make for gorgeous jewelry pieces. Not only can you save money by opting for some other cuts, but you may also end up with a ring that sets you apart from the crowd!

A number of other cuts waste less of the rough stone, which means they are priced lower than the round brilliant cut that wastes so much of it. Some examples of cuts that produce less waste are pear-cut diamonds, oval-cut diamonds, and marquise-cut diamonds. These are all fantastic options to consider when shopping for engagement rings or other special pieces.

How Should I Take Care of My Brilliant Round Diamond?

If you invest in a stunning round brilliant cut, take proper care of the diamond by paying attention to the following.

  • When in Doubt, Take it Off! If you are gardening, painting, or working with your hands in other ways, store your ring somewhere safe until your work is complete.
  • Insure It! Make sure you take out a specific jewelry policy to protect your investment.
  • Clean It Often! Clean your diamond often but do so gently. Be sure to set a drain trap in a sink before you begin, and clean it gently with warm water and mild dish soap. You can use a toothbrush to gently scrub away any debris.

Diamonds of Every Cut at Happy Jewelers

Not only do we have a stunning selection of round brilliant cut diamonds, but we have every other cut and style imaginable, as well as the ability to create a custom piece just for you! Let our expert staff help you find the right diamond cut for your style and budget: Contact us today.

What’s the Most Expensive Diamond Cut? (2024)


What’s the Most Expensive Diamond Cut? ›

The most expensive diamond cut is the round brilliant, which is also the most popular diamond cut. The high price tag is because there is a lot of wastage of the rough stone whilst the diamond expert is cutting it.

Which cut of diamond is most expensive? ›

The most expensive diamond shape is by far, the round brilliant cut diamond. This cut has 58 facets to reflect the maximum amount of light, making it the most sparkly and brilliant of all the diamond cuts. The round cut diamond requires a lot of skill and precision to cut correctly, which adds to its high cost.

What is the highest quality cut of diamond? ›

The highest cut grade is Ideal + Hearts for a Round Brilliant cut diamond, and Excellent for other diamond shapes. As such, these are the most expensive diamond cut grades. Due to its popularity and high demand, a Round Brilliant cut diamond is the most expensive type of diamond cut.

What cut diamond holds its value the best? ›

They are classic with timeless quality, which means round cut brilliant diamonds also tend to retain and appreciate the most in value. We sell more round cut diamonds than any other shape. That means the pricing needs to be comparable because these are regularly in high demand.

Which diamond is the most expensive? ›

Topping our list of the most expensive diamonds in the world is the legendary Koh-I-Noor. Weighing in at a massive 105.6ct, the most expensive diamond in the world is oval-shaped. Steeped in mystery and legend, the stone is believed to have been mined in India in the 1300s.

Which cut of diamond gives the most sparkle? ›

The round diamond cut has the perfect number of facets and offers complex results. These facets interplay to produce exceptional brilliance, reflecting light by themselves to produce a magical sparkle. Therefore, the most brilliant, or sparkliest, diamond cut is the brilliant round cut.

What cut makes a diamond look biggest? ›

The marquise diamond shape has the largest appearance of any shape. It has a similar elongated look as the oval and pear shapes, but both ends form tapered points. The marquise shape will always look the largest because those tapered points create the largest surface area of all the shapes.

What cut of diamond is the rarest? ›

The Royal Asscher cut is an updated version of the Asscher cut (an octagonal design with 58 layered facets). However, the Royal Asscher cut has 74 facets and a higher crown, and has exceptionally high clarity. It's said that the number of jewelers who can craft a Royal Asscher cut is less than 100 worldwide.

What's the hardest diamond cut? ›

Heart cut diamonds, and Marquise cut diamonds, are considered the most difficult diamond cut. “Marquise and Heart are particularly tricky cuts because symmetry is so important for each,” explains Taylor.

Which diamond cut is timeless? ›

Always Timeless: Round Brilliant

The round brilliant is the most popular diamond and a great choice for the woman who appreciates classic style. A round brilliant cut diamond maximizes the amount of reflected light, giving it incredible sparkle, especially when compared with other cuts.

What is the least valuable diamond cut? ›

Ranking number one as the most affordable diamond shape, cushion-cut diamonds are a great choice for an elegant yet price-conscious purchase.

What is the second most popular cut of diamond? ›

Princess Cut

A modern version of the round brilliant, princess cut diamonds are the second most brilliant and popular among diamonds. Their outstanding light dispersion and affordable cost makes them a wonderful way to turn a woman into your princess for life.

What is the least popular diamond shape? ›

The three least known diamond shapes
  • Ashley Bean. Pear.
  • Emerald.
  • Gray Box Studios. Emerald Halo Ring.
Mar 10, 2021

What is the nicest diamond? ›

The best diamond clarity rating is Flawless (FL). These are the rarest diamonds in the world; less than 0.05% of all diamonds are Flawless or Internally Flawless.

What is the rarest diamond on Earth? ›

5 World's Rarest Diamonds
  1. Koh-i-Noor. Koh-i-Noor is one of the rarest diamonds on Earth. ...
  2. The Cullinan. The Cullinan diamond is one of the rarest and most valuable diamonds in the world. ...
  3. The Hope. ...
  4. De Beers Centenary. ...
  5. The Pink Star Diamond.

What is the highest carat for a diamond? ›

1. The Cullinan Diamond. The largest diamond in history was discovered in the Premier Mine of South Africa in 1905. Named after the owner of the mine, Thomas Cullinan, the Cullinan Diamond was an incredible 3,106 carats — weighing nearly 1.4 pounds.

What is the cheapest cut of diamond? ›

According to industry experts, some of the most affordable diamond shapes are the oval, cushion, and princess cuts, often costing between 20% and 30% less than a round cut.

What is the most timeless cut of diamond? ›

Always Timeless: Round Brilliant

The round brilliant is the most popular diamond and a great choice for the woman who appreciates classic style. A round brilliant cut diamond maximizes the amount of reflected light, giving it incredible sparkle, especially when compared with other cuts.

What cut of diamond is rare? ›

Ashoka Cut Diamond

The Ashoka Cut is extremely rare and is just a tweak on the Cushion Diamond shape. However, a more rounded rectangle has replaced the original square shape.

Why is round the most expensive cut? ›

The Round Brilliant cut is the most expensive cut of diamond. This is because up to 50% of the original rough diamond weight is lost to cutting and polishing, due to the strict measurements required for a brilliant cut.

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