Yes. Lab diamonds are real diamonds. They are chemically, physically, and optically identical to diamonds pulled from the earth — and if you handed one to a gemologist, they could not tell the difference with the naked eye.

That's not marketing language. That's science. And in this article, we're going to walk you through exactly why lab created diamonds are real diamonds, how they're made, how they're graded, and why the "fake" narrative has no basis in fact.

What Makes a Diamond a Diamond?

Before we can answer whether lab grown diamonds are real, we need to define what a diamond actually is.

A diamond is a mineral composed entirely of carbon atoms arranged in a cubic crystal structure — one of the hardest arrangements in nature, which is why diamond registers a 10 on the Mohs hardness scale (the maximum). This crystal structure also gives diamond its signature brilliance, fire, and light dispersion — the qualities that make it the world's most coveted gemstone.

That's it. That's the definition. Diamond = carbon in a specific crystal structure.

A lab diamond has that exact same carbon crystal structure. It is, by every scientific definition, a diamond.

How Lab Diamonds Are Made

Lab grown diamonds are created using two established methods: HPHT (High Pressure, High Temperature) and CVD (Chemical Vapor Deposition). Both processes replicate the conditions under which diamonds form naturally.

HPHT (High Pressure, High Temperature)

HPHT mimics the extreme heat and pressure found deep in the earth's mantle. A small diamond seed is placed inside a press with carbon material and subjected to temperatures above 1,400°C and pressures exceeding 1.5 million PSI. Over days or weeks, carbon atoms bond around the seed in the same crystalline structure as a mined diamond.

CVD (Chemical Vapor Deposition)

CVD uses a different but equally precise method. A diamond seed is placed in a chamber filled with carbon-rich gases (typically methane and hydrogen). When the chamber is heated to extreme temperatures, the gases break down and carbon atoms deposit layer by layer onto the seed, building a diamond crystal from the ground up.

Both methods produce diamonds that are indistinguishable from earth-grown diamonds — not just to the naked eye, but under gemological examination.

Lab Diamonds vs. Mined Diamonds: Identical at the Atomic Level

Here's where this gets important for shoppers who want the facts.

A mined diamond and a lab grown diamond have:

  • The same chemical composition — 100% carbon
  • The same crystal structure — cubic diamond lattice
  • The same hardness — 10 on the Mohs scale
  • The same refractive index — the property responsible for sparkle and brilliance
  • The same thermal conductivity
  • The same density

The only difference between a lab created diamond and a mined diamond is their origin: one grew in a reactor over weeks, the other grew underground over billions of years.

That's it. There is no physical, chemical, or optical property that makes a mined diamond superior to a lab grown diamond.

How Professionals Test and Grade Lab Diamonds

The Gemological Institute of America (GIA) — the world's most respected diamond grading authority — grades lab grown diamonds using the exact same 4Cs system as mined diamonds: Cut, Color, Clarity, and Carat.

When you buy a lab diamond from Lihara, it comes with a grading report that evaluates the stone exactly as a mined diamond would be evaluated. There are no separate standards, no lower thresholds, no asterisks. The diamond either meets the grade or it doesn't.

Lab diamonds are also tested using the same standard gemological equipment. Tools that detect diamond properties — like thermal conductivity testers — will confirm that a lab grown diamond is, in fact, a diamond. They respond identically to mined stones.

Debunking the "Fake Diamond" Myth

The confusion around lab created diamonds usually comes from mixing them up with diamond simulants — materials that look like diamonds but have completely different properties. Here's the difference:

Diamond Simulants (Not Real Diamonds)

  • Cubic Zirconia (CZ): A synthesized zirconium dioxide. Different crystal structure, different composition, different hardness (8.5 on Mohs). Will scratch over time. Looks different under magnification.
  • Moissanite: A silicon carbide crystal. Excellent brilliance, but not a diamond. Different refractive index and crystal structure.
  • White Sapphire, White Topaz: Other gemstones that visually resemble diamonds but are chemically distinct.

Lab Grown Diamonds (Real Diamonds)

Lab grown diamonds are in a completely separate category. They are not simulants. They are not approximations. They are real diamonds — the same material, the same structure, the same thing — just grown in a controlled environment instead of mined from the ground.

Calling a lab diamond "fake" is like calling ice made in a freezer "fake water." The method of production doesn't change what it is.

Why Lab Diamonds Are the Smarter Choice

Once you understand that lab created diamonds are real diamonds, the question becomes: why would you choose anything else?

Better Value

Lab grown diamonds typically cost 50–80% less than mined diamonds of equivalent quality. That means you can get a larger stone, a higher grade, or a better setting — for the same budget. The difference in price is simply a function of supply chain and production costs, not quality.

Ethical Sourcing

Lab grown diamonds are conflict-free by definition. There are no mines, no extraction operations, no geopolitical supply chain concerns. If provenance and ethics matter to you, lab diamonds remove that ambiguity entirely.

Same Quality, Every Time

Because lab grown diamonds are produced in controlled conditions, quality consistency is high. You're getting the same material, graded to the same standards, with a transparent production process.

Frequently Asked Questions

Are lab created diamonds real diamonds? Yes. Lab created diamonds are 100% real diamonds — chemically and physically identical to mined diamonds.

Can you tell the difference between a lab diamond and a mined diamond? Not with the naked eye, and not with standard gemological equipment. Even trained gemologists require specialized tools specifically designed to detect lab grown diamonds (which look for minor trace element signatures, not quality differences).

Do lab grown diamonds hold their value? Lab diamonds, like all diamonds, are not typically considered investment vehicles. Their primary value is as jewelry. Mined diamonds have also seen significant depreciation in recent years, so this is less of a distinguishing factor than it once was.

Are lab diamonds graded differently? No. Lab diamonds are graded by the GIA and other major labs using the same 4Cs standards as mined diamonds.

Is a lab diamond a simulant? No. A simulant is a different material that looks like a diamond (like cubic zirconia or moissanite). A lab diamond is a diamond — same material, same structure, just grown differently.

What's the difference between HPHT and CVD diamonds? Both HPHT and CVD diamonds are real diamonds. The difference is in the growth method, not the final product. CVD diamonds are more common in gem-quality production today.

Shop Real Lab Diamonds at Lihara

At Lihara, every diamond we sell is a real diamond — lab grown, GIA-graded, and designed to be worn every day. From diamond stud earrings to tennis chains to solitaire rings, we offer the same quality as traditional fine jewelry at a fraction of the price.

Browse our diamond collection →

Real diamonds. Real quality. No compromise.