Do Lab-Grown Diamonds Have Flaws? Understanding Inclusions & Clarity
Lab-grown diamonds have become one of the most talked-about options in the jewelry world, especially for engagement rings. They’re often marketed as “perfect,” “flawless,” or “clean,” which leads many people to ask an important question:
Do lab-grown diamonds actually have flaws?
The answer is yes—lab grown diamonds do have flaws, just like natural diamonds. However, the type, appearance, and frequency of those flaws (called inclusions) can differ. Understanding how clarity works will help you make a smarter decision, whether you’re comparing lab grown vs natural diamonds or choosing the right stone for an engagement ring.
What Are Diamond Inclusions?
Inclusions are natural characteristics found inside a diamond. These can include tiny crystals, internal fractures, or growth patterns that form during the diamond’s creation.
In natural diamonds, inclusions develop over billions of years deep within the earth. In lab grown diamonds, inclusions form during the controlled growing process in a laboratory.
Even though lab diamonds are man-made, they are still real diamonds—and that means they are not automatically flawless.
Do Lab-Grown Diamonds Have Flaws?
Yes, they do. While lab grown diamonds are created in controlled environments that can reduce imperfections, they still develop internal characteristics during formation. In fact, many lab grown diamond flaws are unique to how they’re created. These can include metallic inclusions from the growth process, growth lines or striations, cloudiness in certain lighting, and internal graining patterns.
That said, lab grown diamonds are often produced with higher clarity grades on average compared to natural diamonds, since the growing conditions can be optimized to minimize imperfections.
How Clarity Is Graded
Both lab-grown and natural diamonds are graded using the same clarity scale, typically by organizations like GIA (Gemological Institute of America).
The clarity scale ranges from:
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Flawless (FL)
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Internally Flawless (IF)
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Very Very Slightly Included (VVS1, VVS2)
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Very Slightly Included (VS1, VS2)
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Slightly Included (SI1, SI2)
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Included (I1, I2, I3)
Most engagement rings—whether lab grown or natural diamond—fall somewhere in the VS to SI range. These diamonds often appear “eye-clean,” meaning you can’t see flaws without magnification.
Are Lab-Grown Diamonds More Flawless Than Natural Diamonds?
Lab-grown diamonds are often marketed as being “perfect,” but in reality, truly flawless diamonds—lab or natural—are extremely rare. What lab-grown diamonds do offer is a higher likelihood of finding a stone with fewer visible inclusions at a more accessible price point.
Because of this, many buyers are able to choose a higher clarity grade (like VS1 or VVS2) when purchasing a lab grown diamond engagement ring compared to a natural diamond at the same budget.
Do Lab-Grown Diamond Inclusions Look Different?
Yes, and this is one of the more interesting differences.
Certain inclusions are more common in lab-grown diamonds, especially depending on how they were created (HPHT vs CVD methods). For example, metallic inclusions can sometimes appear in lab diamonds grown using high-pressure techniques.
However, most of these inclusions are not visible without magnification and don’t impact the overall beauty of the diamond.
For everyday wear—especially in something like an engagement ring—most people will never notice the difference.
What Is an “Eye-Clean” Diamond?
An “eye-clean” diamond is one where inclusions are not visible to the naked eye when viewed from a normal distance.
This is often the sweet spot for buyers. You don’t necessarily need a flawless diamond—you just need one that looks flawless.
Whether you’re choosing a lab grown engagement ring or a natural diamond, focusing on eye-clean clarity allows you to:
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Maximize visual beauty
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Stay within budget
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Prioritize size or setting
Lab Grown vs Natural Diamonds: Clarity Comparison
When comparing lab grown vs natural diamonds, clarity is just one factor—but it’s an important one. Lab grown diamonds tend to have fewer visible inclusions on average, often offering higher clarity grades for the price and a very clean, bright appearance. Natural diamonds, on the other hand, typically feature more unique and varied inclusions, which can add character, along with a sense of rarity and long-term value appeal. They’re often preferred by buyers specifically seeking a natural diamond. Neither option is inherently better—it ultimately comes down to what matters most to you.
Does Clarity Affect Value?
Yes, clarity plays a role in pricing—but not always in the way people expect.
Once a diamond is eye-clean, increasing clarity further often has minimal visual impact but a noticeable price increase. This is true for both lab-grown and natural diamonds.
For example, the difference between a VS1 and VVS1 diamond may be difficult to see, even under magnification, but the price difference can be significant.
That’s why many jewelers recommend focusing on balance rather than chasing the highest possible grade.
Custom Engagement Rings (Choosing the Right Diamond for You)
If you’re unsure how clarity should factor into your decision, working with a jeweler to create a custom engagement ring can make the process much easier. Custom design allows you to compare lab grown diamonds vs natural diamonds side by side, select the right clarity grade for your budget, and choose a diamond shape—such as a cushion cut, radiant cut, or emerald cut engagement ring—that complements your preferences. It also gives you the opportunity to build a ring designed for long-term wear and future stacking. Just as importantly, this process helps ensure you’re not overpaying for characteristics that won’t make a visible difference.
Proposal-Ready Engagement Rings
If you’re working on a timeline, proposal-ready engagement rings offer a great solution. These fully set rings are available immediately and often feature carefully selected diamonds that balance clarity, size, and overall appearance. Many proposal-ready options include both lab grown diamond engagement rings and natural diamonds, giving you flexibility based on your preferences. This approach allows you to see the diamond in person, evaluate its clarity and sparkle firsthand, and even leave with a ring the same day. While you can always customize or upgrade later, proposal-ready rings make it easy to move forward when timing matters.
Are Lab-Grown Diamonds a Good Choice?
Lab-grown diamonds can be an excellent choice, especially if you’re looking to maximize size and clarity within a specific budget. They offer the same physical and visual properties as natural diamonds, with the added benefit of often appearing cleaner at lower price points.
However, it’s important to understand that they are not “perfect” or “flawless” by default. Like all diamonds, they have characteristics that should be evaluated carefully.
Making A Confident Diamond Purchase
So, do lab-grown diamonds have flaws?
Yes—but that’s not a drawback. It’s simply part of what makes them real diamonds.
The key is understanding how clarity works and focusing on what actually matters: how the diamond looks to you. In most cases, choosing an eye-clean stone—whether lab grown or natural—will give you the best balance of beauty and value.
If you’re exploring your options, taking the time to compare diamonds in person and ask questions about clarity can make all the difference in finding the right fit.
