The World's Largest Lab Grown Diamonds
How big can a lab grown diamond get? The record-breakers are bigger than you'd think.
When lab grown diamonds first arrived, they were tiny. Today, growers are producing record-breaking stones that rival the most famous mined diamonds — a sign of just how far the technology has come.
Records keep tumbling
Lab grown diamonds have grown dramatically in size over the years. Where a few carats was once impressive, growers have since produced polished stones well into the double and even triple digits in carat weight — feats that would be extraordinarily rare and astronomically expensive in mined diamonds.
Each new record tends to be broken within a year or two as CVD and HPHT reactors improve — a pace of progress the natural-diamond world simply can't match.
Why it matters for buyers
You probably don't need a 100-carat stone — but the same technology pushing those records is exactly what makes larger, beautiful everyday sizes so much more affordable than they used to be. Curious how big reads on the hand? See our Carat guide.
The same goes for moissanite
Because moissanite is lab-created too, large carat sizes are wonderfully accessible — you can wear a bold, statement stone for a fraction of what a comparable diamond would cost.
FAQs
How big can lab grown diamonds get?
Growers have produced polished stones far larger than typical jewelry sizes — well into dozens of carats — and records keep growing.
Does bigger mean better quality?
Not necessarily — cut quality and the other Cs still determine how beautiful a stone looks, whatever its size.
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