Lab-Grown Diamond Myths vs Facts : Separating Truth from Fiction

Lab grown diamonds have transformed the jewellery industry, offering buyers another way to enjoy real diamonds. As their popularity continues to grow, so do the misconceptions surrounding them.

Some people believe lab-grown diamonds are fake. Others assume they do not sparkle like natural diamonds or that they are not durable enough for everyday jewellery. These myths often create confusion for buyers who are simply looking for accurate information before making an important purchase.

The truth is that lab-grown diamonds are genuine diamonds. They share the same physical, chemical, and optical properties as natural diamonds. The main difference lies in how they are created.

In this guide, we'll separate fact from fiction and address some of the most common myths about lab-grown diamonds.

Why Are There So Many Misconceptions About Lab-Grown Diamonds?

Many people assume lab-grown diamonds are fake, but they are actually real diamonds with the same physical and chemical properties as natural diamonds. Read our complete guide on Natural vs Lab-Grown Diamonds to understand the key differences.

As a result, outdated information, marketing claims, and confusion with diamond simulants such as cubic zirconia and moissanite have led to several myths that continue to circulate today.

Let's take a closer look at what is true and what is not.

Myth #1: Lab-Grown Diamonds Are Fake Diamonds

Fact: Lab-Grown Diamonds Are Real Diamonds

This is the most common misconception.

Lab-grown diamonds are not fake diamonds. They are genuine diamonds made of carbon atoms arranged in the same crystal structure as natural diamonds.

Because they share the same chemical composition and physical properties, lab-grown diamonds display the same brilliance, fire, and durability as natural diamonds.

Leading gemological laboratories such as IGI and GIA grade and certify lab-grown diamonds using the same standards applied to natural diamonds.

The only difference is their origin. Natural diamonds form beneath the Earth over billions of years, while lab-grown diamonds are created in controlled laboratory environments.

Myth #2: Lab-Grown Diamonds Do Not Sparkle Like Natural Diamonds

Fact: They Sparkle Exactly the Same

Many buyers worry that lab-grown diamonds might look dull or less brilliant than natural diamonds.

In reality, sparkle is determined primarily by a diamond's cut quality rather than its origin.

A well-cut lab-grown diamond can display the same brilliance, fire, and scintillation as a well-cut natural diamond.

Without specialised equipment, even trained jewellers cannot visually distinguish between the two.

Myth #3: Lab-Grown Diamonds Are Actually Cubic Zirconia

Fact: Lab-Grown Diamonds and Cubic Zirconia Are Completely Different

This myth likely exists because both are created in manufacturing facilities.

However, the similarities end there.

Lab-grown diamonds are real diamonds made from carbon.

Cubic zirconia is a synthetic material made from zirconium dioxide.

The two differ significantly in hardness, durability, brilliance, and overall performance.

While cubic zirconia may resemble a diamond initially, it does not possess the same characteristics or longevity as a genuine diamond.

Myth #4: Lab-Grown Diamonds Are the Same as Moissanite

Fact: Moissanite Is a Different Gemstone

Lab-grown diamonds and moissanite are often confused, but they are not the same.

A lab-grown diamond is a real diamond.

Moissanite is a separate gemstone composed of silicon carbide.

While moissanite is beautiful in its own right, it has different optical properties and a different crystal structure.

Buyers seeking a genuine diamond should understand that a lab-grown diamond and moissanite are two entirely different products.

Myth #5: Lab-Grown Diamonds Are Less Durable

Fact: Lab-Grown Diamonds Are Just as Durable as Natural Diamonds

Durability is one of the biggest concerns for engagement ring buyers.

Fortunately, lab-grown diamonds are every bit as durable as natural diamonds.

Both score 10 on the Mohs Hardness Scale, making them the hardest gemstones commonly used in jewellery.

They resist scratching, withstand everyday wear, and can last for generations when properly cared for.

Whether set in a ring, pendant, bracelet, or pair of earrings, lab-grown diamonds are designed to be enjoyed for a lifetime.

Myth #6: Lab-Grown Diamonds Turn Cloudy Over Time

Fact: They Maintain Their Appearance

Some people believe lab-grown diamonds become cloudy or lose their sparkle as they age.

This is false.

Because lab-grown diamonds are real diamonds, they retain their brilliance just like natural diamonds.

If a diamond appears dull, it is usually because dirt, oils, lotions, or everyday residue have accumulated on the surface.

Regular cleaning helps both natural and lab-grown diamonds maintain their sparkle.

Myth #7: Lab-Grown Diamonds Cannot Be Certified

Fact: They Are Professionally Certified

Lab-grown diamonds can be independently graded and certified.

Trusted gemological laboratories evaluate lab-grown diamonds based on the same quality factors used for natural diamonds:

• Cut

• Colour

• Clarity

• Carat Weight

A certification report also confirms that the diamond is lab-grown and provides detailed information about its characteristics.

Always look for certification when purchasing diamond jewellery.

Myth #8: You Can Easily Tell the Difference Between a Natural and Lab-Grown Diamond

Fact: Most People Cannot Tell Them Apart

One of the most surprising facts about lab-grown diamonds is that they look identical to natural diamonds.

They have the same brilliance, sparkle, hardness, and overall appearance.

Even professional jewellers often require specialised equipment to identify a diamond's origin.

To the average consumer, there is no visible difference.

Myth #9: Bigger Lab-Grown Diamonds Mean Lower Quality

Fact: Size and Quality Are Different Things

Because lab-grown diamonds are often more affordable, buyers can frequently choose a larger stone within their budget.

Some people mistakenly assume this means the diamond is lower quality.

In reality, quality is determined by the 4Cs:

• Cut

• Colour

• Clarity

• Carat Weight

A larger lab-grown diamond can still achieve excellent quality grades and display exceptional beauty.

Myth #10: Lab-Grown Diamonds Are Not Used in Fine Jewellery

Fact: They Are Widely Used in Fine Jewellery

Lab-grown diamonds are commonly used in:

• Engagement rings

• Wedding bands

• Diamond earrings

• Tennis bracelets

• Pendants

• Fashion jewellery

Many leading jewellery brands and independent jewellers offer lab-grown diamond collections because buyers appreciate having more options when selecting diamond jewellery.

Myth #11: All Lab-Grown Diamonds Are Identical

Fact: Lab-Grown Diamonds Vary in Quality

Just like natural diamonds, lab-grown diamonds come in different quality grades.

Some may have higher colour grades, better clarity, or superior cut quality than others.

This is why certification remains important.

Two diamonds may have the same carat weight but look very different depending on their overall quality.

Myth #12: Lab-Grown Diamonds Are Only Chosen Because They Cost Less

Fact: Buyers Choose Them for Many Different Reasons

Price is certainly one reason many consumers consider lab-grown diamonds.

However, it is far from the only factor.

Many buyers appreciate:

• The ability to purchase a larger diamond within their budget

• Access to a wider range of designs

• Certified diamond quality

• The same beauty and durability as natural diamonds

Every buyer has different priorities, and the right choice depends on personal preferences.

What Should Buyers Focus On Instead of Myths?

Rather than relying on common misconceptions, focus on factors that genuinely affect a diamond's appearance and quality:

Cut Quality

The cut has the greatest impact on sparkle and brilliance.

Certification

Always choose a certified diamond.

Colour and Clarity

These characteristics influence the diamond's overall appearance.

Jewellery Craftsmanship

A beautifully crafted setting enhances the beauty of any diamond.

Your Personal Preferences

The best diamond is ultimately the one that matches your style, budget, and expectations.

Final Thoughts

Lab-grown diamonds have become one of the most discussed topics in the jewellery industry, which is why so many myths continue to circulate. The reality is much simpler than many people realise.

Lab-grown diamonds are real diamonds. They sparkle like natural diamonds, offer the same durability, can be certified by leading laboratories, and are virtually impossible to distinguish from natural diamonds without specialised equipment.

Understanding the facts allows you to make a confident and informed decision when shopping for diamond jewellery. Instead of focusing on misconceptions, concentrate on what truly matters: quality, certification, craftsmanship, and finding a diamond that you love.