5 Myths About Lab-Grown Diamonds — Debunked
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Lab-grown diamonds have become mainstream — but misconceptions still swirl around them. Here are the five most common myths, set straight.
### Myth 1: "Lab-Grown Diamonds Are Fake"
This is the most persistent myth, and it's simply wrong.
Lab-grown diamonds are real diamonds. They share the exact same chemical composition (pure carbon), crystal structure, and physical properties as mined diamonds. The only difference is how they were created.
What people sometimes confuse lab-grown diamonds with are simulants — cubic zirconia, moissanite, or white sapphire — which look diamond-like but are chemically different. Lab-grown diamonds are not simulants. They are diamonds.
### Myth 2: "They Don't Sparkle as Much"
Sparkle — technically called brilliance and fire — comes from a diamond's cut, not its origin. A well-cut lab-grown diamond sparkles identically to a well-cut mined diamond of the same grade.
In fact, because lab-grown diamonds can be more affordable, buyers often upgrade to a better cut grade within their budget, resulting in more sparkle than they'd get from a mined stone at the same price.
### Myth 3: "Jewelers Can Spot Them Immediately"
Even trained gemologists cannot identify lab-grown diamonds with the naked eye or standard loupe. Only specialized equipment — like spectroscopy machines — can distinguish lab-grown from mined stones.
Your IGI certificate will note the origin, but visually, no one can tell.
### Myth 4: "They'll Become Worthless"
It's true that lab-grown diamonds have seen price decreases as production has scaled. But "decreasing price" and "worthless" are very different things.
More importantly: the vast majority of mined diamonds also depreciate significantly the moment you leave the store. Diamonds in general are not a reliable investment vehicle. Buy them to love and wear, not to flip.
### Myth 5: "They're Not as Durable"
Diamonds are the hardest natural substance on earth — rated 10 on the Mohs scale. Lab-grown diamonds share that hardness completely. They cannot be scratched by anything except another diamond. They don't fade, cloud, or degrade over time.
A lab-grown diamond set in a quality gold band will last generations — just like any other diamond.
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The bottom line: lab-grown diamonds offer everything a mined diamond does — the sparkle, the hardness, the certification, the lasting beauty — at a fraction of the price. The myths are fading as fast as the markups.