Lab-Grown Diamond Resale Value: Expect 10–30% of What You Paid
A lab-grown diamond resells for about 10 to 30 percent of what you paid for it, and a typical offer from a jeweller or pawn shop is at the bottom of that range or below. Some won't buy them at all. That isn't because lab-grown diamonds are fake or inferior; they're chemically identical to mined ones. It's because they cost a few hundred dollars to make, the price of making them keeps falling, and there's no shortage of new ones. If you're buying a lab-grown diamond, buy it to wear. If you're selling one, here's what to expect and how to get the most.
Why the resale value is so low
Production cost fell off a cliff. Growing a one-carat diamond cost several thousand dollars in the early 2000s. It now costs in the low hundreds. Retail prices followed, dropping by well over half in a few years, so a stone bought in 2021 competes with a new, identical stone that costs a fraction as much today.
There's no scarcity. A mined diamond's price rests on limited supply. A lab-grown diamond can be made to order. Nobody pays a premium for a used one when a new one is cheaper.
The resale market is thin. Natural diamonds have a century-old secondary market: estate dealers, auction houses, specialist buyers. Lab-grown diamonds don't, so there are few buyers and they set the price.
Retailers don't want them back. Margins on lab-grown are thin, and a buyback would mean competing with their own new stock. Many jewellers decline, and some pawnbrokers refuse uncertified lab stones outright.
What you'll actually be offered
| Where | Typical offer | Speed |
|---|---|---|
| Pawn shop or local jeweller | 5–15% of retail, cash | Same day |
| Online buyback sites | 10–20% | Days |
| Consignment or marketplace listing | 15–30% | Weeks to months |
| Retailer trade-up programme | Up to the original stone price as credit toward a new, more expensive piece | Immediate, but not cash |
The setting changes the picture. A gold or platinum ring has scrap value that can be worth more than the stone. On a $3,000 lab-grown engagement ring, the gold band might fetch $300 and the diamond $200.
How natural diamonds compare
Natural diamonds also lose money on resale, usually 25 to 50 percent of retail, and the jewellery trade's markup is the reason. But the gap is real: a natural diamond resells for a noticeably larger share of its price, and large or unusual natural stones can appreciate. A lab-grown diamond bought today is almost certain to be worth less next year, because the next batch will be cheaper to make.
If your question is "which holds value," the answer is neither, really, but natural holds more. If your question is "which is the better buy to wear," lab-grown gives you a bigger, cleaner stone for the money, which is why it's winning.
The best way to sell one
- Get the certificate. A stone graded by IGI or GIA with a laser inscription is sellable; an uncertified stone often isn't.
- Get at least three offers. The spread between a pawn shop and a consignment dealer can be double.
- Sell the setting separately if it's heavy gold or platinum and the stone offer is low.
- Consider a trade-up if you were going to buy something anyway. Credit toward a new piece usually preserves far more of your spend than cash.
- Don't wait for it to appreciate. It won't.
Checking what you have
Look for the certificate number inscribed on the girdle (you'll need a loupe), confirm the stone's grade and whether it's lab-grown or natural, and search sold listings for the same carat, colour and clarity. The Valued app can identify a piece from a photo and give you a starting estimate, and our guide to finding out what an antique is worth covers how to check against real sales. For the opposite extreme of diamond pricing, where history is worth more than carats, see how much the Kohinoor is worth.
Common questions
Do lab-grown diamonds have any resale value?
Yes, but little: about 10 to 30 percent of retail, and often 5 to 15 percent from a pawn shop or jeweller. The metal in the setting may be worth as much as the stone.
Why won't jewellers buy lab-grown diamonds?
New lab-grown stones keep getting cheaper, so a used one has to be priced below new stock, which leaves no margin. Some jewellers will take them as trade-in credit instead of cash.
Will lab-grown diamonds go up in value?
Almost certainly not. The cost of growing them keeps falling and supply is unlimited, so prices trend down.
Are lab-grown diamonds a bad purchase?
Not if you're buying to wear. You get a larger or better stone for the money. They're a bad purchase if you expect to get the money back.