Lab Grown Diamond Guidance

A customer once held a lab grown diamond up to the light, turning it slowly, and then asked the question almost every first-time buyer eventually asks: “But is it as strong as a real one?” The assumption embedded in that question — that lab grown diamonds might somehow be structurally inferior — is one of the most persistent misconceptions in the jewellery world right now. And it’s worth unpacking properly, because the answer has real implications for how you shop, what you buy, and how long that piece of jewellery will actually last.

Diamonds, whether grown in a laboratory or extracted from the earth, are made of the same material: pure carbon atoms arranged in a cubic crystal lattice. That structure is what gives diamonds their legendary hardness. The origin of the stone — a geological process that took billions of years underground versus a controlled growth process that takes a few weeks — does not change the fundamental chemistry. Both score a 10 on the Mohs hardness scale. Both are the hardest naturally occurring substance known to science.

So on the headline question of durability, the answer is: they are equal.

But that’s not the whole story.

Why the “weaker lab diamond” myth exists

The misconception probably traces back to early anxieties about anything lab-made — the cultural suspicion that if something was grown rather than found, it must be a shortcut, a compromise, a copy of the real thing. That logic works fine for some products. For diamonds, it doesn’t hold up under scrutiny.

Part of the confusion also comes from conflating lab grown diamonds with diamond simulants. Moissanite, cubic zirconia, and white sapphire are all used as diamond alternatives, and they genuinely are less hard than diamonds — moissanite scores 9.25 on the Mohs scale, cubic zirconia around 8.5. If someone bought a simulant thinking it was a lab diamond, or if they read articles that lumped all these options together, the confusion is understandable. But lab grown diamonds are not simulants. They are chemically, optically, and physically identical to mined diamonds. The science-backed answer is unambiguous on this point: they are real diamonds.

There’s also been some industry-level messaging — particularly from legacy mining interests — that subtly framed lab grown stones as inferior. That framing has largely collapsed under gemological scrutiny, but echoes of it remain in buyer psychology.

Hardness vs durability: an important distinction

Here’s where it gets genuinely interesting. Hardness and durability are related but not the same thing. Hardness measures scratch resistance — how well a material resists surface abrasion when another material is dragged across it. Durability is broader: it encompasses toughness (resistance to chipping or fracturing), chemical stability, and long-term structural integrity under real-world wear conditions.

On hardness, both lab grown and mined diamonds are identical. Nothing scratches a diamond except another diamond.

On toughness, diamonds — regardless of origin — have a notable characteristic: they can chip along their cleavage planes. Diamond has perfect octahedral cleavage, meaning that a sharp, direct blow at the right angle can cause a fracture. This is true of every diamond, lab grown or mined. It’s why skilled setters and cutters approach diamond work with care, and why you shouldn’t, for instance, wear diamond rings while doing heavy manual work or contact sports.

But within this shared characteristic, there’s a compelling case that lab grown diamonds may carry structural advantages over some mined stones.

The inclusion factor — and why controlled growth matters

Natural diamonds form under enormous pressure and heat, deep within the earth’s mantle, over timescales that are almost impossible to imagine. During that process, foreign materials — nitrogen atoms, crystal growth lines, mineral inclusions, small fractures called feathers — frequently become trapped within the stone. These aren’t just grading concerns. Inclusions that reach the surface of a stone, or that sit near a point of applied stress, can become structural weak points. A feather inclusion, for instance, is a small fracture. Under the right impact, it can propagate.

Lab grown diamonds, produced either through High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD) processes, grow in controlled environments where the variables — temperature, pressure, gas composition — are precisely managed. The result, when the process is well-executed, tends to be stones with fewer inclusions, and particularly fewer fracture-type inclusions. A high-quality VS1 or VVS lab grown diamond from a reputable grower isn’t just cosmetically cleaner; it may be structurally more homogeneous than a mined equivalent at the same price point.

If you want to understand what actually happens during the lab diamond creation process, the level of precision involved is remarkable — the growing chamber conditions are monitored and adjusted continuously, which is something that geological processes, obviously, cannot do.

This doesn’t mean every lab diamond is flawless. CVD-grown stones, for example, can develop specific growth structures or strain patterns, and some HPHT stones may carry metallic inclusions from the catalyst material used in the process. These are known characteristics, well-documented in gemological literature, and they are assessed in grading reports just as mined inclusions are. The point is not that lab grown diamonds are automatically superior — it’s that the origin argument works both ways, and the controlled environment of a laboratory introduces its own set of advantages.

Scratch resistance in daily wear

In practical terms, what does durability mean for a ring worn every day, or a pair of earrings passed down through generations?

Diamonds scratch almost nothing and are scratched by almost nothing. That’s true regardless of origin. Over decades of wear, the surface of a well-cut diamond will maintain its polish in ways that softer gemstones simply cannot. A sapphire, at Mohs 9, will slowly accumulate micro-scratches from household dust (which contains quartz particles at around Mohs 7) and lose its initial polish over time. A diamond will not.

For the Hyderabad climate — the dust, the festivals, the daily wear customs that are genuinely more intensive than in many Western markets — this matters. Diamond jewellery here is worn to weddings, festivals, and everyday occasions in ways that test durability more than a piece kept in a box for special occasions in London or New York. The hardness of a diamond, lab grown or mined, is a practical asset in this context.

What actually threatens a diamond’s longevity

Setting quality matters more than most buyers realise. A well-cut, internally clean diamond set poorly — prongs that grip unevenly, a bezel that doesn’t secure the girdle properly, or a setting in a soft metal that deforms over time — is more vulnerable than the same stone would be in a quality mount. The diamond itself might be fine while the setting fails around it, which can lead to loss or chipping if the stone becomes loose and catches on something.

This is one reason that the expertise behind the jewellery matters as much as the diamond itself. At Elevé Diamonds, the backing of Tibarumal’s century of jewellery craftsmanship means the setting work is executed at the same standard as the diamond selection — which is particularly relevant when considering long-term durability in pieces like engagement rings intended for daily wear over a lifetime.

And while we’re on the subject of what to watch for: avoid ultrasonic cleaners if your stone has fracture-fill treatments. This applies more to certain categories of mined diamonds (where clarity enhancement through fracture filling is practised) than to lab grown stones, which are not fracture-filled. Steam cleaning is generally safe for diamonds, but the setting material — gold alloy, platinum, any pave elements — should be assessed before any intensive cleaning.

Do they age differently?

One question worth addressing directly: does a lab grown diamond change over time in ways a mined diamond doesn’t?

No. Carbon-to-carbon bonds in a diamond crystal lattice are stable at ordinary temperatures and pressures. A lab grown diamond will not degrade, discolor, or lose hardness over time. The “diamonds are forever” quality — that genuine long-term stability — applies equally to both. There is no expiry mechanism specific to the laboratory origin.

Some buyers ask whether the HPHT or CVD growth process introduces any long-term instability. It doesn’t. The finished crystal, once grown and cut, is subject to the same physical laws as any other diamond. If anything, post-growth annealing processes (used to remove certain CVD colour characteristics and improve clarity) further stabilise the crystal. You can read more about these manufacturing methods and the specific techniques involved if the technical details interest you.

The comparison, plainly stated

Lab grown diamonds and mined diamonds are equally hard, equally resistant to scratching, and equally subject to the same cleavage-plane vulnerability that affects all diamonds. In terms of structural quality at equivalent price points, lab grown diamonds from reputable producers frequently offer fewer inclusion-related vulnerabilities because the growth environment is controlled. The durability story is, if anything, slightly in favour of lab grown stones at the same grading tier — and unambiguously equal at the same inclusion grade.

The persistent idea that lab grown stones are somehow weaker has no gemological basis. It belongs to the same category of misinformation as the claim that they’re fake, or that experts can spot them with the naked eye. If you’re weighing your options and want a fuller picture of how the two compare across other dimensions — value, ethics, certification — this complete comparison guide covers the wider landscape in useful detail.

Buy the stone that fits your values, your budget, and the design you love. On durability, you don’t need to compromise either way.