Emerald Cut Diamond Size Chart (MM): A Comprehensive Guide

by caratrio jewels on Oct 03, 2023

Emerald Cut Diamond Size Chart (MM): A Comprehensive Guide

Diamonds have fascinated humanity for centuries with their sparkling beauty and timeless allure. Among the various diamond cuts available, the emerald cut stands out for its elegant and sophisticated appearance. If you're in the market for an emerald-cut diamond, understanding its size is crucial. In this comprehensive guide, we will delve into the world of emerald-cut diamond size charts, exploring everything from the basics to expert insights.

The Allure of Emerald-Cut Diamonds

Emerald-cut diamonds are a timeless and elegant choice for engagement rings and other jewelry. Their rectangular shape with cut corners and step-cut facets exudes sophistication and grace. The long lines of the emerald cut create a stunning visual effect, making the diamond appear larger than its carat weight suggests. Many celebrities and royals have chosen emerald-cut diamonds for their engagement rings, further cementing their status as a symbol of enduring love.

Why Size Matters

When it comes to diamonds, size is one of the first things people notice. The size of a diamond can significantly impact its appearance, brilliance, and price. Understanding the size of an emerald-cut diamond, particularly in millimeters (MM), is crucial when making a purchase decision. This guide will walk you through the intricacies of emerald-cut diamond size, helping you make an informed choice that aligns with your preferences and budget.

Understanding Diamond Size

Carat vs. Millimeter (MM) Size

Before delving into emerald-cut diamond size charts, it's essential to differentiate between carat weight and millimeter size. The carat weight measures a diamond's mass, while the millimeter size (MM) indicates its physical dimensions. While carat weight provides a general idea of a diamond's size, MM size offers a more precise measurement of its length and width.

The Relationship between Size and Price

In the world of diamonds, size often translates to price. Larger diamonds, both in carat weight and MM size, tend to command higher prices. However, it's essential to note that other factors, such as the diamond's cut, color, and clarity, also influence its value. Balancing size with quality is key to finding the perfect emerald-cut diamond for your needs.

Emerald-Cut Diamond Anatomy

a close-up of several gemstones

Facets and Cuts

The unique beauty of emerald-cut diamonds lies in their step-cut facets. Unlike brilliant-cut diamonds, which feature numerous small facets that create intense sparkle, emerald-cut diamonds have fewer, larger facets. This cut emphasizes clarity and the diamond's natural crystalline structure. The large, open table of an emerald-cut diamond allows you to appreciate its clarity and any inclusions that may be present.

Length-to-Width Ratio

The proportions of an emerald-cut diamond are crucial in determining its overall appearance. The length-to-width ratio, often expressed as a ratio like 1.5:1 or 1.75:1, affects the diamond's visual appeal. A higher ratio creates a longer, more rectangular shape, while a lower ratio results in a square appearance. Finding the right length-to-width ratio is a matter of personal preference and style.

Importance of the 4Cs

Carat Weight

Carat weight is one of the four Cs of diamond grading and refers to the diamond's mass. In general, larger carat weights correspond to larger diamonds. However, two diamonds with the same carat weight can have different MM sizes based on their cut and proportions. It's essential to consider both carat weight and MM size when selecting an emerald-cut diamond.


Clarity measures the presence of internal and external imperfections, known as inclusions and blemishes, respectively. Emerald-cut diamonds, with their step-cut facets, tend to showcase inclusions more prominently than brilliant-cut diamonds. Understanding the clarity grade of your chosen diamond is vital for ensuring its overall beauty and value.


Diamond color is graded on a scale from D (colorless) to Z (light yellow or brown). The choice of color grade depends on personal preference, but it's important to note that emerald-cut diamonds can display color more noticeably due to their open facets. Finding the right balance between color and budget is key.

Cut Quality

The quality of an emerald-cut diamond significantly impacts its beauty and brilliance. A well-cut emerald diamond will have symmetrical facets, excellent polish, and proper proportions. Investing in a high-quality cut ensures that your diamond sparkles and shines to its full potential.

Choosing the Right Size

Choosing the Right Size

Personal Style and Preference

Your style and preference play a significant role in determining the ideal size for your emerald-cut diamond. Some individuals prefer larger, more prominent diamonds, while others lean towards more modest sizes that prioritize subtlety and understated elegance. Consider your everyday activities, fashion sense, and comfort when deciding on the size that suits you best. Ultimately, your emerald-cut diamond should complement your style and make you feel confident and radiant.

Budget Considerations

Budget is a critical factor when selecting the size of your emerald-cut diamond. Larger diamonds generally come with a higher price tag, so it's essential to establish a budget that aligns with your financial comfort zone. Keep in mind that other factors, such as cut, clarity, and color, also affect the price. Striking a balance between size and quality will help you make a wise investment.

Popular MM Sizes for emerald-cut diamonds

Emerald Cut diamond size guide

Emerald-cut diamonds are available in various MM sizes, each offering a unique appearance and style. Here, we'll explore some of the most popular MM sizes and the visual impact they create:

1x2 MM Emerald Cut

A 2x1 mm emerald-cut diamond is a delicate and subtle choice. Its slender proportions create a refined and understated look, making it suitable for minimalist jewelry styles or as an accent stone in a larger piece.

1.5x3 MM Emerald Cut

The 3x1.5 mm emerald cut strikes a balance between elegance and presence. Its elongated shape adds a touch of sophistication to any jewelry piece, making it a versatile choice for both rings and necklaces.

2x4 MM Emerald Cut

With a 4x2 mm emerald-cut diamond, you start to see a more pronounced rectangular shape. This size offers a noticeable presence without being overly extravagant, making it an excellent choice for engagement rings.

3x5 MM Emerald Cut

The 5x3 mm emerald cut is a popular choice for engagement rings. Its proportions provide a substantial look on the finger while maintaining an elegant and timeless appeal.

4x6 MM Emerald Cut

Moving up to a 6x4 mm emerald-cut diamond, you enter the realm of classic elegance. This size exudes sophistication and charm, making it a sought-after choice for engagement rings and statement jewelry.

5x7 MM Emerald Cut

The 7x5 mm emerald-cutemerald cut diamond offers a striking presence. Its elongated shape enhances the visual impact, making it an ideal choice for those who desire a bold and luxurious look.

6x8 MM Emerald Cut

An 8x6 mm emerald-cut diamond is a statement piece. It commands attention with its substantial size and elegant proportions, making it a top choice for engagement rings that exude luxury.

7x9 MM Emerald Cut

For those seeking a captivating and mesmerizing diamond, the 9x7 mm emerald cut delivers. Its size and brilliance make it a standout choice for engagement rings that symbolize enduring love.

8x10 MM Emerald Cut

A 10x8 mm emerald-cut diamond is the epitome of luxury. Its impressive size and timeless elegance make it a favorite among those who want a truly remarkable and unforgettable engagement ring.

9x11 MM Emerald Cut

An 11x9 mm diamond offers a grand and regal appearance. Its proportions make it a symbol of prestige and commitment, perfect for those who desire an extravagant statement piece.

10x11 MM Emerald Cut

The 12x10 mm emerald-cut diamond is a showstopper. Its substantial size and exceptional brilliance create an engagement ring that leaves a lasting impression, making it a cherished heirloom.

11x13 MM Emerald Cut

At 13x11 mm, the emerald-cut diamond reaches its zenith in size and grandeur. This impressive diamond demands admiration and awe, representing a love that knows no bounds.

Emerald Cut Diamond Size Chart: Visual Representation

To provide a clearer understanding of how different MM sizes translate into the appearance of an emerald-cut diamond, let's explore a visual representation of these sizes:

[Insert a visual chart here]

This chart showcases the various MM sizes available for emerald-cut diamonds, allowing you to visualize their proportions and how they might look when set in jewelry.

Price Considerations

How Size Affects Price

It's no secret that larger emerald-cut diamonds come with a higher price tag. However, the price increase is not linear; it's exponential. This means that a diamond that is twice the size of another won't cost just twice as much; it will cost significantly more. Understanding this pricing structure is vital when setting your budget and expectations.

Balancing Size and Quality

When it comes to emerald-cut diamonds, bigger isn't always better. Quality factors, such as cut, clarity, and color, play a crucial role in a diamond's overall beauty. It's often wiser to prioritize a smaller but higher-quality diamond over a larger one with less desirable characteristics. Striking the right balance ensures that your diamond is both stunning and valuable.

Certification and Appraisal

Importance of Diamond Certification

Diamond certification is a critical aspect of purchasing an emerald-cut diamond. Reputable gemological laboratories assess and grade diamonds based on their quality and characteristics. A certified diamond comes with a report that provides detailed information about its cut, color, clarity, carat weight, and other relevant factors. This report not only serves as proof of the diamond's authenticity but also offers valuable insights into its quality. When shopping for an emerald-cut diamond, always insist on a certified stone to make an informed decision.

Choosing Reputable Laboratories

Not all diamond-grading laboratories are created equal. It's essential to choose a reputable and recognized lab to certify your diamond. Some of the most respected diamond grading organizations include the Gemological Institute of America (GIA), the International Gemological Institute (IGI), and the American Gem Society (AGS). Diamonds certified by these organizations are held to rigorous standards, ensuring accuracy and trustworthiness.

Where to Buy Emerald Cut Diamonds

Local Jewelers

Local jewelry stores provide the advantage of personalized service and the opportunity to view diamonds in person. Visiting a local jeweler allows you to examine emerald-cut diamonds up close, ask questions, and receive expert guidance. However, it's essential to research the jeweler's reputation and ensure they offer certified diamonds.

Online Retailers

Online retailers have gained popularity for their vast selection and competitive prices. Shopping for emerald-cut diamonds online provides convenience and the ability to compare options easily. Look for online retailers with transparent information, customer reviews, and a strong return policy. Additionally, ensure that the diamond's certification is provided.

Auction Houses

Auction houses occasionally feature exquisite emerald-cut diamonds for sale. These auctions can be an exciting way to acquire a unique and valuable diamond. However, participating in diamond auctions requires knowledge and experience. If you're considering this route, seek guidance from experts or appraisers to navigate the process successfully.

Customization Options

Customizing the Size

Many jewelers offer customization services, allowing you to create a unique piece of jewelry tailored to your preferences. If you have a specific MM size in mind that's not readily available, inquire with jewelers about the possibility of customizing your emerald-cut diamond. Customization allows you to achieve your desired size while maintaining quality.

Settings and Metal Choices

In addition to customizing the size, you can personalize your emerald-cut diamond jewelry through setting and metal choices. The setting style, such as solitaire, halo, or three-stone, can enhance the diamond's appearance. Likewise, selecting the right metal, whether it's platinum, white gold, yellow gold, or rose gold, adds to the overall aesthetic of your jewelry.

Caring for Your Emerald Cut Diamond

Cleaning and Maintenance

Proper care and maintenance are essential to keep your emerald-cut diamond looking its best. To clean your diamond at home, use a gentle jewelry cleaning solution and a soft brush to remove dirt and oils. Regularly inspect the setting to ensure the diamond is secure. It's advisable to have your diamond professionally cleaned and inspected annually.

Insurance Considerations

Given the value of emerald-cut diamonds, insurance is a wise investment. Jewelry insurance policies can protect your diamond against loss, theft, damage, or other unforeseen events. Consult with your insurance provider to ensure your diamond is adequately covered.

Famous Emerald Cut Diamond Engagement Rings

Notable Celebrities and Their Choices

Emerald-cut diamonds have graced the fingers of numerous celebrities, adding to their allure and desirability. Some famous individuals and their iconic emerald-cut engagement rings include:

  • Beyoncé: Beyoncé's engagement ring from Jay-Z features a stunning 18-carat emerald cut diamond.
  • Amal Clooney: George Clooney proposed to Amal with a 7-carat emerald cut diamond ring.
  • Jennifer Lopez: J.Lo's engagement ring from Alex Rodriguez boasts a large emerald cut diamond.
  • Angelina Jolie: Brad Pitt proposed to Angelina Jolie with a custom-designed emerald-cut diamond ring.
  • Grace Kelly: Prince Rainier III of Monaco presented Grace Kelly with an exquisite emerald-cut diamond engagement ring.

Historic Emerald Cut Diamond Rings

Throughout history, emerald-cut diamonds have been chosen to symbolize enduring love and commitment. Notable historic emerald-cut diamond rings include:

  • The Rockefeller Diamond: This 18.04-carat emerald cut diamond is known for its exceptional quality and rich history.
  • The Taylor-Burton Diamond: Richard Burton famously gifted Elizabeth Taylor a 69.42-carat emerald cut diamond.
  • The Krupp Diamond: Richard Burton also gave Elizabeth Taylor a 33.19-carat emerald cut diamond, known as the Krupp Diamond.
  • The Queen Mother's Engagement Ring: King George VI proposed to the Queen Mother with a 3-carat emerald cut diamond ring.

Emerald Cut Diamonds in Pop Culture

Movies and TV Shows

Emerald-cut diamonds have made appearances in various films and television series, often serving as symbols of love and luxury. Some memorable instances include:

  • "Sex and the City": Mr. Big proposed to Carrie Bradshaw with a stunning emerald cut diamond ring in the iconic television series.
  • "The Great Gatsby": The film adaptation of F. Scott Fitzgerald's classic novel features lavish emerald-cut diamond jewelry, reflecting the luxury of the 1920s.
  • "Pretty Woman": In this beloved romantic comedy, Edward Lewis presents Vivian Ward with an emerald-cut diamond necklace.

Songs and Literature

The allure of emerald-cut diamonds extends to the world of music and literature, where they are often mentioned as symbols of love and desire. From romantic ballads to classic novels, emerald-cut diamonds have left an indelible mark on popular culture.