Asscher Cut Lab Diamonds: The Complete Buying Guide

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You’ve come to the right place if you’re looking to buy an Asscher cut lab-grown diamond. Our comprehensive Asscher cut lab-grown diamond buying guide will help you find the perfect diamond. Whether you’re a first-time buyer or an experienced shopper, our guide will provide you with all the necessary information to find the best Asscher cut lab diamond while saving money.

We’ll walk you through the recommended diamond proportions, clarity, color, and cut grades and help you identify what to look for and avoid when shopping for Asscher cut lab diamonds.

3 best places to buy Asscher cut lab-grown diamonds

The Asscher cut lab-grown diamond is a popular choice among diamond shapes, known for its elegant and modern appeal. It blends classic and contemporary styles and exudes subtle luxury and indulgence.

An Asscher cut lab-grown diamond from Clean Origin
An Asscher cut lab-grown diamond from Clean Origin

This guide explores Asscher cut lab diamonds’ origins and key features, discusses factors influencing quality, offers tips on selecting the perfect Asscher-shaped lab diamond, and addresses common misconceptions. It also highlights lab-grown Asscher cut diamonds as a sustainable and ethical alternative. Finally, it teaches you how to save on Asscher cut lab diamonds and where to find the best prices.

What is an Asscher Cut Diamond?

The Asscher cut diamond shape was developed and patented in 1902 by Joseph Asscher. He created a square-shaped diamond with cropped corners using the same step-cutting style found in emerald cut lab diamonds.

The crown is more prominent in an Asscher cut diamond than other diamond shapes. When combined with the hall of mirrors effect of the step-cutting technique, an X can be seen at the center of a well-cut Asscher diamond.

Asscher cut diamonds became popular during the Art Deco jewelry era of the 1920s and 1930s. The jewelry trends during this time involved straight lines and angled shapes. And now, they are back in vogue!

Both Asscher cut diamonds, and the similar-looking elongated emerald cut diamonds are popular diamond choices. Asscher diamonds can be mistakenly called the square emerald cut, but these are two different diamond shapes.

Measurements of an Assher cut lab diamond.
Measurements of an Asscher cut lab diamond from James Allen

The square emerald cut doesn’t have the X found in the Asscher cut diamond. The facet arrangements are different, as well as the height of the crown. 

Lab-grown Asscher cut diamonds are an incredible choice for an extraordinary engagement ring. Read on to find out more about this unique diamond shape. 

Pros and Cons of Asscher Cut Lab-Grown Diamonds

Every diamond shape has its benefits and detractions. Here are some of the pros and cons when shopping for Asscher cut diamonds. 


  • Asscher cut diamonds have no points, making them less vulnerable to chipping than other shapes.
  • Asscher cut diamonds give off dramatic flashes of light rather than the same type of sparkle as many other diamond shapes. 
  • Asscher cut diamonds have a distinct vintage appeal and work well in vintage engagement ring settings.


  • If cut quality is not excellent, Asscher cut diamonds may appear dark and shadowy in some areas.
  • Asscher cut diamonds may appear smaller than other diamond shapes of the same carat weight.  

How to Pick Out the Best Lab-Grown Asscher Cut Diamond

If you’re unsure how to pick out your lab-grown Asscher cut diamond with the best value, we can help you there.

You don’t need to be a lab diamond expert, but it’s encouraged to understand the 4Cs of diamond quality when choosing your Asscher cut diamond. 

The (lab diamond) 4Cs are: 

Many factors, even beyond the 4Cs, affect the overall price, quality, and value of a lab-grown Asscher cut diamond. Some attributes affect it a lot, and others not so much. 

First, we’ll talk about the cut quality of the Asscher diamond and exactly how it affects the sparkle and beauty of your lab-grown diamond engagement ring. 

Best Cut Quality for Asscher Cut Diamonds

Any diamond shape beside the round brilliant cut is known as a fancy diamond shape. Princess cut diamonds, oval cut diamonds, and Asscher cut diamonds are just a few of the traditional fancy diamond shapes. 

Round diamonds can have exact proportions and measurements to reflect the whitest and most rainbow light. They can be analyzed and graded with a cut grade on a diamond report. 

Fancy shapes do not. Instead, they have specific parameters of measurement that one should stay between when picking them out. They do not have grades on a grading report, with the exception of some laboratories. 

You may find Asscher cut lab diamonds that retailers have sorted into different cut categories, but this is often done for inventory sorting. 

Ideal Proportions for Lab-Grown Asscher Cuts

Instead of a cut grade like Excellent or Very Good, Asscher and other shapes have “ideal” proportions. You should choose Asscher diamond according to the following parameters:   

  • Table Percentage: 60-68%
  • Length to Width Ratio: 1.00-1.05
  • Depth Percentage: 65-75%
  • Crown Height: 12-17% of the total depth
  • Polish and Symmetry: Excellent

If you want a square shape for your lab-grown Asscher cut diamond, you should maintain a length-to-width ratio of 1.0-1.03. If you wish your Asscher to appear slightly longer, choose an L/W ratio of 1.04-1.05. Beyond this, the shape appeal will start to look wonky. 

Pay attention to the cropped corners of your Asscher cut diamond before buying. No exact measurements are needed, but you want to see that the corners are even. Lower cut quality may result in misshapen corners or one being longer than the other. 

Much of picking out fancy diamond shapes is observing the shape appeal. Dark areas in an Asscher cut diamond result from how the diamond was cut. It’s not uncommon for diamonds to have extra facets or be misaligned. 

Choosing an Asscher cut diamond within these ranges and following our tips will help you pick a more beautiful Asscher diamond. 

Best Colour Grade for Asscher Cut Diamonds

Color tint in a diamond is caused by impurities entering the diamond crystal as it forms. A gemologist determines the presence of this yellow or brown tint, and a color grade is assigned. 

At diamond grading laboratories like the (GIA), the diamond graders match each diamond to a master set of color-graded diamonds on the D-Z scale. 

The official diamond colors, as defined by GIA, are

  • Colourless: DEF
  • Near Colourless: GHIJ
  • Faint: KLM
  • Light Yellow: N-Z

You should know that faint yellow and light yellow colorless diamonds are not the same as fancy-colored yellow diamonds (you can learn more in our guide to fancy-colored lab diamonds). If a diamond is supposed to be colorless, the presence of yellow is considered lower and cheaper. 

The great thing about color grades and the presence of yellow tint is that it only affects your diamond visually. It can’t harm it physically. Some shoppers even prefer the warmer, cheaper color grades. And, if you set your diamond in a golden metal, you may as well pick a more affordable color grade because the gold will impact the diamond’s color appearance.

But if you want to keep your Asscher cut diamonds as tint-free as possible, you’ll want to choose higher color grades. Higher color grades often cost more, assuming other details are also high. 

Purchasing a lab-grown Asscher cut diamond is a great idea, especially regarding color grades. Lab-grown diamonds have the same color grades as mined diamonds, but you’re more likely to see more colorless lab diamonds than tinted lab diamonds. 

And if you like the warm yellow tint, you’re at an even better advantage with a less expensive diamond that isn’t harmed by a lower color grade.

Best Clarity Grade for Asscher Diamonds

Clarity is how clear your Asscher cut diamond is of natural imperfections and blemishes. These clarity characteristics are observed based on their size, color, location, number, and relief against the diamond’s overall visual appearance. 

Many gemological labs give clarity grades to diamonds, but most of the industry does it according to the GIA’s clarity scale.  

The clariGIA’sart consists of the following grades: 

  • Flawless (F)
  • Internally Flawless (IF)
  • Very Very Slightly Included (VVS1, VVS2) 
  • Very Slightly Included (VS1, VS2) 
  • Slightly Included (SI1, SI2)
  • Included (I1, I2, I3) 

Purchasing Asscher lab-grown diamonds from retailers with exact standards rather than unnamed private sellers is best. Not all private sellers are bad, but many are scams.

1-carat Asscher cut diamonds that are highly included (I1-I3) often look unappealing. You may find that SI clarity diamonds also look rather muddy with dark inclusions.

Inclusions tend to be more noticeable in step-cut shapes with long and narrow facets like the Asscher cut and emerald cut diamonds. Therefore, we recommend choosing a lab-grown Asscher cut diamond with a clarity of VS2 or higher in 1 carat and above.

Best Carat Weight for Asscher Cut Diamonds

Carat weight is often considered a diamond’s size, but it’s not. Different diamond shapes have different cutting styles. The same diamond shape will get bigger as it increases from 1 carat to 2 carats, and so on. But some 1-carat lab-created diamond shapes will look bigger than others despite weighing the same. 

A round brilliant diamond may look smaller than an oval lab-grown diamond of the same carat weight. Oval cut diamonds are elongated and require more of the carat weight in its length rather than underneath. Round diamonds require a deep bottom, resulting in more of their carat weight being unseen.

Remember when we mentioned that Asscher cut diamonds have a higher crown (face-up facets) than other diamond shapes? That means more of the carat weight is in the crown, but not giving it a wider surface area. 

The cropped corners of an Asscher cut diamond and its protruding crown make it look smaller than other square shapes like princess cut lab diamonds or radiant cut diamonds. 

If you want a larger-looking Asscher cut diamond, you may want to devote more of your budget towards carat weight. Keep in mind that some lower clarity grades and color grades may need to be higher as carat weight increases. That is because they become more visible and will impact the overall appearance more.

And that can be very expensive. Carat weight is one of the quickest ways to increase the price of diamonds. You can find 3-carat lab diamonds with lower clarity and color grades for tens of thousands of dollars despite their unappealing look. 

So, it’s important not to prioritize carat weight too much over other diamond grades. A 1-carat eye-clean diamond will look much prettier than a 2-carat lab-grown diamond with I clarity grades. However, the two-carat is also likely to be more expensive. 

How Much Does a Lab-Grown Asscher Cut Diamond Cost?

When you choose a lab-grown Asscher cut diamond over a mined one, you gain many advantages and few disadvantages.

The most significant advantage lab-grown diamonds have over mined diamonds is their price. In fact, they are so cheap that some people think they’re fake. Lab-grown diamonds are real diamonds, we assure you.

You can expect lab-grown Asscher cut diamonds to cost between 60-80% less expensive than a mined Asscher cut diamond of similar quality.

According to our diamond price analysis, you should expect the prices of Asscher cut diamonds of good quality in the below ranges.

Lab Diamond CaratPrices
1-carat Asscher cut diamond prices$600-1200
2-carat Asscher cut diamond prices$1100-2000
3-carat Asscher cut diamond prices$2200-4000
Prices for Asscher cut lab-created diamonds as of June 2024

But be aware that there’s no exact number of how much lab-created Asscher-shaped diamond costs. That’s because so many factors and personal preferences affect diamond prices. Diamond quality, certification, brand, retailer, and individual factors about the diamond can all affect the price of an Asscher cut diamond. 

But one thing is sure: Lab-grown Asscher cut diamonds are substantially cheaper than mined ones. However, be aware that the trade-off for a cheaper price is the “rarity” of a diamond.

Lab-grown diamonds are easier and faster for scientists to produce than when they form in the ground. Eliminating mining costs and workforce contributes to the lower price of lab-grown diamonds.

Lab-grown diamonds aren’t rare and don’t hold much resale value other than on social media marketplace sites and resale platforms. But don’t worry, colorless mined diamonds aren’t worth a lot either unless they’re larger carat weights with other high diamond grades. 

We don’t recommend investing in diamonds anyway. You should instead invest in the productive economy, not park your money.

And, if you aren’t planning to resell your lab-grown Asscher cut diamond engagement ring, then there’s no reason not to take advantage of the steep discount.

Asscher Cut Lab-Grown Diamond Engagement Rings

Asscher cut diamonds are known for their dramatic flashes of light, cropped corners, and signature X in the center of the stone. They have a vintage appeal, looking best with other vintage engagement ring details such as milgrain or filigree. That makes them perfect if you want a more classic engagement ring with an Art Deco look.

Micropavé Asscher cut diamond engagement ring with milgrain finish
Micropavé Asscher cut diamond engagement ring with milgrain finish

In addition, the step-cutting style of Asscher cut diamonds gives them a distinctive light reflection from other diamond shapes. They look best with higher clarity and color grades if you want to maintain a colorless and eye-clean quality. 

Asscher diamonds may look smaller than some diamond shapes, but this can be rectified by choosing an engagement ring setting with more dimension or a higher profile, such as the one above from Ritani.

And remember, choosing a lab-grown Asscher cut diamond engagement ring over a mined one will allow you to purchase a cheaper diamond or use your extra savings to choose higher grades or carat weight. It is best to consider a variety of loose lab-grown Asscher cut diamonds before making your selection. 

Choosing a balance of grades will result in the best lab-grown Asscher cut diamond you can afford. As long as you stay within the cut quality parameters of an Asscher cut diamond, the rest is up to you. 

Where to Buy Asscher Cut Lab Diamonds

At, we review lab diamond jewelers, and based on our countless in-depth reviews, we recommend the following places to buy Asscher cut lab-grown diamonds.

Ritani tops our list of the best and cheapest places to buy Asscher cut lab diamonds.
Ritani review ⭐⭐⭐⭐⭐


Ritani tops our list of the best and cheapest places to buy Asscher cut lab diamonds because of their market-leading low prices and price transparency, the most extensive inventory of lab diamonds, customization options, and jewelry store partnership.

Grown Brilliance review ⭐⭐⭐⭐⭐

Grown Brilliance

Grown Brilliance is our best-rated place to buy lab diamond engagement rings—and Asscher cut lab diamond jewelry. They have a massive selection of Asscher cut lab diamonds, gorgeous jewelry settings, and some of the best prices for lab-grown Asscher cut diamonds.

Grown Brilliance is our highest-rated place to buy Asscher cut lab diamond engagement rings and jewelry.
James Allen is one of our best-rated places to buy Asscher cut lab diamonds overall.
James Allen review ⭐⭐⭐⭐⭐

James Allen

James Allen is among our best-rated places to buy Asscher cut lab diamonds. The service is top-notch, prices are low, the selection is enormous, and the quality and craftsmanship are superb.

Brilliant Earth review ⭐⭐⭐⭐⭐

Brilliant Earth

Brilliant Earth is the leading sustainable lab-grown diamond jeweler. Their deep commitment to sustainability, including being the only seller of sustainable graded lab diamonds, sets them apart. The prices are excellent, too, and they have an extensive inventory of Asscher cut lab diamonds.

Brilliant Earth is the leading sustainable lab-grown diamond jeweler and one of the best places to buy Asscher cut lab diamonds.
Clean Origin is another of our favorite places to buy Asscher cut lab diamonds.
Clean Origin review ⭐⭐⭐⭐⭐

Clean Origin

Clean Origin is another of our favorite places to buy lab-grown diamond jewelry, including Asscher cut lab diamonds. We recommend Clean Origin for its unbeatable prices, a large selection of lab-grown diamonds and jewelry, and excellent support (plus 100-day risk-free returns).

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Juli Church
Juli Church

Juli is a Certified Diamontologist with over 8 of experience in the diamond and jewelry industry. She is furthering her studies to become a Graduate Gemologist at the Gemological Institute of America (GIA). She has gained invaluable experience, knowledge, and insider secrets while working at diamond jewelers Kay and Zales. During her time in the retail industry, Juli trained new hires in company knowledge, jewelry knowledge, and best practices. However, she decided to leave after being forced to sell low-quality products to customers to meet arbitrary sales goals. Juli is committed to providing honest and accurate information to help you make the best diamond and jewelry purchases possible.

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