Are Lab Grown Diamonds Real Diamonds? The Truth Explained

“Are lab grown diamonds real diamonds?” If that’s the question you typed into Google, here’s the clear answer: yes. Lab grown diamonds are real diamonds, with the same chemical and physical properties as mined diamonds.

What trips people up is the word “real.” In this guide, I’m going to explain what “real” actually means in the jewelry world, how lab grown diamonds are made, how they differ from natural diamonds, how professionals tell them apart, and how to choose confidently without overthinking it. The key mindset shift is simple:

There are two categories of real diamonds:

natural (mined) and lab grown (created).

It’s not “real vs fake.” It’s “earth-made vs lab-made.”

Lab Grown Vs Natural Diamonds: What’s The Same And What’s Different

Let me start with what matters most as a buyer.

What’s the same:

• Both are diamonds. Same crystal structure (carbon), same hardness, same optical properties.
• Both are graded on the 4Cs (cut, color, clarity, carat).
• Both can look identical to the naked eye. If two stones are cut well and graded similarly, most people will never tell which is which just by looking.

What’s different:

• Origin. Natural diamonds formed in the earth under heat and pressure over an extremely long time, then were mined. Lab grown diamonds are grown in controlled lab environments that recreate the conditions needed for diamond growth.
• Rarity story. Natural diamonds carry the “from the earth” and “formed over time” emotional appeal. Lab grown diamonds carry the modern “technology” story and a more controlled, traceable production chain.
• Some inclusions and growth patterns. You can see different growth characteristics under magnification, and gem labs can detect origin using advanced equipment.
• Price and value dynamics. Lab grown is typically less expensive at retail, and the resale market tends to behave differently (I’ll be very direct about that below).

A simple way I explain it in person is this:

If you care most about size for your budget, you’ll probably prefer lab grown.

If you care most about rarity and legacy tradition, you’ll probably prefer natural.

If you care most about how beautiful it looks on the hand, you should focus on cut quality and design, regardless of origin.

And yes, the emotional part is real. Some clients love the idea that their stone was formed in the earth. Others love the idea that they can get a larger, cleaner diamond and still put more budget into a setting they really want. Neither side is wrong. It just depends on what you value.

How They Compare On Brilliance, Sparkle, And Durability

Brilliance and sparkle come from the cut, not from whether a diamond is lab grown or mined.

A well-cut diamond will return light beautifully. A poorly cut diamond, even with a high color and clarity grade, can look dull in real life. This is why I put so much emphasis on cut proportions, light performance, and the details you actually see once the diamond is set.

On durability, both lab grown and natural diamonds are 10 on the Mohs hardness scale. That means both are excellent for daily wear, including engagement rings.

Real-world performance comes down to craftsmanship:

• Cut quality and symmetry
• Polish
• Setting design and how it protects the stone
• Prong quality and overall build

A great diamond can still be let down by a weak setting, and an average diamond can look stunning in the right design with the right proportions. That part is true whether you go natural or lab.

How They Compare On Price (And Why Lab Grown Costs Less)

Lab grown diamonds typically cost less for one main reason: they can be produced at scale.

Natural diamonds have a limited supply chain that depends on mining, sorting, distribution, and global rough supply. Lab grown diamonds are created using manufacturing processes that have become more efficient over time. That scalability, plus supply chain efficiency, is a big reason prices are lower.

This is the most important thing to understand:

Lower price does not mean fake.

It means the market supply is different.

Also, pricing is not one fixed number. A lab grown diamond’s price can vary based on:

• Shape (rounds often price differently than ovals, emeralds, pears, and cushions)
• Cut quality (a truly excellent cut commands a premium)
• Color and clarity
• Certification and brand or retailer markup

So if you’re comparing prices online and you’re confused, you’re not alone. I always recommend comparing apples to apples: same shape, similar cut grade, similar color and clarity, and a reputable grading report.

How They Compare On Value Retention (What Buyers Should Understand)

I’m going to say this as plainly as I can, because it saves people from regret later:

Most diamonds, natural or lab grown, are not financial investments in typical retail buying scenarios.

If you buy a diamond ring at retail and then try to resell it, you will usually see a gap between what you paid and what the market will pay you. That’s true across jewelry in general.

That said, there are practical differences:

• Lab grown diamonds generally have a larger spread between retail and resale, partly because retail prices have been trending downward as production scales and competition increases.
• Natural diamonds can retain relatively more depending on quality, rarity factors, and market conditions, but it’s still not guaranteed, and it varies widely.

My advice is to focus on personal value instead of “profit”:

• Do you want a bigger look for your budget?
• Do you care about the origin story?
• Do you want to maximize cut quality and overall design?
• Do you want something you’ll be proud to wear every day?

If you buy based on what you actually value, you’ll be happy long after the pricing conversation stops mattering.

How To Tell If A Diamond Is Lab Grown (And Why You Usually Can’t By Eye)

Here’s the truth: you usually cannot tell by eye whether a diamond is lab grown or natural.

Even experienced jewelers don’t “guess” origin by looking at a diamond across a counter. Visual identification is unreliable because lab grown and natural diamonds can look identical, especially once set.

Professionals rely on:

• Grading reports from reputable labs (this is your best practical path as a buyer)
• Laser inscriptions on the diamond’s girdle that correspond to the report number (often included)
• Specialized instruments designed to detect growth origin

At a high level, detection methods can include:

• Spectroscopy tools that analyze how the diamond interacts with light
• Fluorescence and phosphorescence pattern analysis
• Growth features under magnification that can suggest HPHT or CVD growth methods (common lab growth techniques)

My consumer takeaway is simple: don’t try to play detective. Buy from a reputable jeweler, ask for proper documentation, and make sure the stone is certified and verifiable.

Are Lab Grown Diamonds Ethical And Eco-friendly? A Practical, Honest View

A lot of buyers consider lab grown for ethical or environmental reasons, and I understand why. Lab grown diamonds can offer:

• More traceability
• Reduced mining impacts compared to traditional extraction

But I also want to be honest and avoid marketing extremes. Lab grown diamonds still require:

• Significant energy use during production
• Industrial equipment and supply chains
• Shipping, packaging, and all the same jewelry manufacturing steps after the diamond exists

So the environmental footprint can vary depending on:

• The producer
• The energy source (renewables vs fossil fuel-heavy grids)
• The transparency of their reporting

If sustainability matters to you, here’s what I recommend asking for:

• What energy sources are used in production?
• Do they have third-party sustainability reporting or audits?
• Can they provide traceability documentation?
• What about the metal in your ring (recycled gold or responsibly sourced platinum)?
• What about side stones and other materials?

I always tell clients: your best choice is the one that aligns with your values and budget, without relying on vague claims.

What I Recommend (As A Jeweler) Based On Your Goal: Size, Budget, Or Legacy

When clients come into Mike Nekta New York, I usually see three main “buyer profiles.” You’ll probably recognize yourself in one of them.

1) If size and budget matter most

Go lab grown.

You can often step up in carat weight, improve color or clarity, or invest more into a beautiful setting without pushing your budget beyond what feels comfortable. If your goal is maximum visual impact per dollar, lab grown is hard to beat.

2) If rarity, tradition, and legacy matter most

Go natural.

For some people, the origin story is the point. They want the “from the earth” rarity and the classic heritage appeal. If that meaning matters to you, it’s worth paying for, because it’s part of the experience.

3) If you want the best overall satisfaction day-to-day

Prioritize cut quality, design, and comfort first, then choose origin.

I’ve seen people buy the “right” diamond on paper and still feel underwhelmed because the cut wasn’t lively or the setting didn’t suit their hand. I’ve also seen people fall in love instantly with a diamond that was chosen thoughtfully for how it performs in real light and how it wears daily.

If you can compare options side-by-side and have someone walk you through the trade-offs clearly, the decision usually becomes easy.

Book an Appointment with Mike Nekta (Mike Nekta New York)

If you want help choosing between lab grown and natural diamonds without pressure, I can help you compare them side-by-side and make a decision you feel good about.

At Mike Nekta New York, I can help with:

• Selecting a certified lab grown diamond or a natural diamond that matches your priorities
• Reviewing grading reports and explaining what matters (and what doesn’t)
• Choosing a setting that fits your style and protects the stone
• Staying within budget while maximizing beauty and long-term satisfaction

Book an appointment with me, Mike Nekta, at Mike Nekta New York to view options and get a no-pressure recommendation.

You’ll leave knowing exactly what you’re buying, what makes it valuable to you, and why you chose it.