Natural vs. lab-grown: what the trade is telling us

Lab-grown prices have fallen sharply while natural diamonds are regaining bridal share.
August 20, 2026
Two round brilliant diamonds side by side with tweezers

If you’ve felt whiplash on diamonds the last few years, you’re not imagining it. The two categories are moving in opposite directions, and both trends are worth reading carefully.

Start with lab-grown. Prices have fallen dramatically as production scaled — a one-carat lab-grown that sold for several thousand dollars a few years ago now often retails around a thousand or less. That’s great for accessible price points, but it’s reset margins and made “hold it and it’ll appreciate” a non-starter. Lab-grown is a fashion and value play now, not a store of value.

Meanwhile, natural diamonds have quietly steadied. After years of losing ground in engagement rings, natural’s share of bridal ticked back up in 2025 — a majority of couples again chose a mined stone for the milestone purchase. The commoditization of lab-grown seems to be reinforcing the prestige of natural for once-in-a-lifetime buys.

For most retailers, the takeaway isn’t to pick a side — it’s to carry both and be straight with customers about the trade-off. Lab-grown gets you size and sparkle for the budget. Natural carries rarity, resale perception, and the story that still matters for weddings and anniversaries.

Two practical notes: quote lab-grown and natural as clearly different products (never let a customer feel misled), and watch the spread — because lab-grown pricing is still settling, the stone you quote today may cost less next quarter. Source close to the sale rather than stocking deep.

Ready to trade on Polygon?

Join the vetted, trade-only marketplace for gem & jewelry professionals.