Yes — lab-grown diamonds are real diamonds. They are chemically, physically, and optically identical to natural diamonds. Both are made of pure carbon arranged in a cubic crystal lattice structure. The only difference between a lab grown diamond and a mined diamond is where it was formed.
What is a Lab Grown Diamond?
A lab grown diamond is a real diamond created inside a controlled laboratory environment. It is not cubic zirconia. It is not glass. It is not a simulant of any kind. The chemical formula, crystal structure, and physical properties are identical to a diamond pulled from the earth.
Understanding what is a lab grown diamond starts with how it is made. Two methods exist:
CVD — Chemical Vapor Deposition
A diamond seed crystal is placed inside a sealed chamber. A carbon-rich gas — typically methane — is pumped in and superheated. Carbon atoms break apart and deposit, layer by layer, onto the seed. Over several weeks, a full gem-quality diamond grows.
HPHT — High Pressure High Temperature
A diamond seed is subjected to extreme heat (around 1,300°C to 1,600°C) and intense pressure that replicates conditions deep underground. Carbon crystallizes around the seed and forms a complete diamond.
Both methods produce the same result: a real diamond, graded by the same gemological standards as any mined stone.
Are Lab Grown Diamonds Real Diamonds?
Yes — a lab grown diamond is a real diamond by every scientific and legal standard.
The properties are identical to mined diamonds:
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Chemical composition: Pure carbon (C)
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Crystal structure: Cubic isometric
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Hardness: 10 on the Mohs scale — the maximum
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Refractive index: 2.417 — same as natural diamonds
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Thermal conductivity: Passes a standard diamond tester
The Federal Trade Commission officially recognized lab grown diamonds as real diamonds in 2018. GIA has graded lab grown diamonds since 2007. IGI certified lab grown diamonds carry the same four-criteria grading report as mined stones. Learning the 4Cs of diamond quality — cut, color, clarity, and carat — applies equally to both.
Is a lab grown diamond a real diamond? Yes. Lab grown diamonds are not imitations. Simulants like cubic zirconia or moissanite are different materials that resemble diamonds but have different chemical compositions. Lab grown diamonds ARE diamonds.
Lab Grown Diamonds vs Natural Diamonds
Lab grown and natural diamonds share the same chemical identity. The differences are origin, price, and long-term resale behavior.
Appearance They look identical. No jeweler can separate a lab grown diamond from a natural diamond with the naked eye. Can you tell the difference between lab grown and natural diamonds visually? No. Specialized spectroscopic equipment is required to detect origin.
Price Lab grown diamonds are significantly more affordable. A 1-carat lab diamond typically costs 50–80% less than a comparable natural diamond. That gap has widened as lab diamond production has increased globally.
Durability Both last indefinitely. Lab grown diamonds do not fade, cloud, or lose their optical properties under normal conditions. A hardness of 10 means they resist scratching from virtually everything.
Ethical Considerations Lab grown diamonds require no mining. For buyers focused on environmental and ethical factors, lab diamonds eliminate concerns tied to diamond extraction.
For a broader look at how natural and lab created diamonds compare to other stone options, the full breakdown in moissanite vs diamond covers the key differences across brilliance, price, and durability.
Do Lab Grown Diamonds Hold Their Value?
This is the most significant point of difference between lab grown and natural diamonds.
Natural diamonds have historically held value better in the secondary market. Lab grown diamond prices have dropped sharply over the past several years as production scaled and supply increased. A lab diamond purchased today may sell for considerably less in five or ten years.
Do lab grown diamonds hold their value the same as natural diamonds? No. For investment or resale purposes, natural diamonds perform better.
For personal use — engagement rings, anniversary jewelry, everyday wear — lab grown diamonds deliver real diamond quality at a lower cost. The value proposition for personal use is strong.
Buyers comparing a moissanite vs lab diamond will find moissanite priced even lower while offering a higher refractive index — a useful comparison for buyers focused on maximum brilliance per dollar.
Pros and Cons of Lab Grown Diamonds
Pros:
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Chemically and physically identical to mined diamonds
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50–80% more affordable than comparable natural diamonds
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GIA and IGI certified — same standards
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Ethically produced with no mining required
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Available in larger carat sizes at lower price points
Cons:
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Resale value depreciates faster than natural diamonds
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Not well-suited as a long-term financial investment
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Some buyers place value on natural origin that lab diamonds cannot replicate
Buyers exploring the full range of diamond alternatives will find multiple options — from lab grown diamonds to moissanite — each with distinct trade-offs across price, brilliance, and long-term value.
Are Lab Grown Diamonds Worth It?
For most buyers, yes.
Lab grown diamonds deliver the real diamond experience — same hardness, same brilliance, same certification — at a significantly lower price. For engagement rings and fine jewelry where personal value matters more than resale, they are a strong choice.
The honest trade-off is resale. Natural diamonds hold their market value better over time. Buyers who prioritize investment should factor that in before purchasing.
Those also exploring moissanite engagement rings will find another certified, durable stone option with exceptional light performance at a lower entry price.
Conclusion
Lab grown diamonds are real diamonds. Same carbon composition, same 10/10 hardness, same GIA and IGI grading standards as natural diamonds. The price advantage is real — typically 50 to 80% less than mined. The trade-off is resale value, which lags behind natural diamonds in the secondary market. For buyers who want genuine diamond quality without the mined diamond price, lab grown stones make a credible and well-supported choice. Buyers weighing all available stone options — from lab grown diamonds to high-brilliance moissanite alternatives — can explore the full jewelry collection to compare quality and styles side by side.
FAQs
Are lab grown diamonds fake?
No. Lab grown diamonds are real diamonds made from pure carbon with the same crystal structure, hardness, and optical properties as mined diamonds.
What is the difference between lab grown and natural diamonds?
The only difference is origin. Natural diamonds form underground over billions of years. Lab grown diamonds are created in a laboratory in weeks using CVD or HPHT technology.
Are man made diamonds real diamonds?
Yes. Man made diamonds — also called synthetic diamonds, cultured diamonds, or engineered diamonds — are chemically identical to natural diamonds and carry GIA or IGI certification.
Can you tell the difference between lab grown and natural diamonds?
Not with the naked eye. Even trained gemologists need specialized spectroscopic equipment to identify origin. Both look identical in person.
Do lab grown diamonds pass a diamond tester?
Yes. Because lab grown diamonds are pure carbon crystal — the same material as natural diamonds — they pass standard diamond testers the same way mined diamonds do.
Are lab grown diamonds cheaper than natural diamonds?
Yes. Lab grown diamonds typically cost 50–80% less than comparable natural diamonds, giving buyers access to larger carat sizes and higher clarity grades within the same budget.
Are lab grown diamonds considered real diamonds by GIA?
Yes. GIA has graded lab grown diamonds since 2007, applying the same cut, color, clarity, and carat standards used for natural diamonds. The certificate notes the origin as laboratory grown.
