Do Lab-Grown Diamonds Hold Value? Resale, Price Trends and When They Are Worth It

In October 2026 a loose 1 carat lab-grown diamond averaged about $516 in online asking prices. Six months earlier the same index was about 17% higher. A natural 1 carat averaged $3,864 and had risen about 4% over the same period. If you bought a lab-grown stone in spring, the same stone costs less to buy today. That is the honest answer to the resale question, and it is also why lab-grown costs so little in the first place.

Lab-grown diamonds do not hold their value the way a store of value should. Retail and wholesale prices have fallen for several years as production has grown, and the resale market is thin: many secondhand buyers will not buy lab-grown stones, or offer very little. A lab-grown diamond is worth it when you buy it to wear. It gets you a larger or better stone for a fraction of the price of a natural one. It is not worth it as an investment.

What prices have done

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StoneAlgo index of online asking prices for loose stones, colors D–K, clarity FL–SI2.

Wholesale prices tell the same story. JCK reported that lab-grown wholesale prices fell 26% across 2025, and that 1 carat rounds fell 15% in the first quarter of 2026 alone. Prices then steadied: 1 ct rounds rose about 1% in the second quarter of 2026. Nobody can say where prices will be in five years. The trend so far has been down.

Why lab-grown prices keep falling

• Supply is not scarce. A diamond can be grown to order in a press or a reactor in weeks. More capacity means more stones and lower prices.
• Costs keep falling. Better presses and reactors grow larger, cleaner stones for less.
• No controlled supply. Natural diamond prices have historically been supported by limited mining output. Lab-grown has no equivalent.

What resale really looks like

• Secondhand buyers. Many pawnbrokers and diamond buyers do not buy lab-grown diamonds, and those that do usually offer a small part of the original price.
• Trade-in and upgrade programs. Some retailers give credit toward a larger stone if you trade in one you bought from them. Read the terms before you buy: credit is often limited to the original store and to a more expensive purchase.
• The metal keeps its value. Gold and platinum are priced by weight and purity, so the setting keeps a resale value that the lab-grown stone does not.
• A report helps, a little. A verified IGI or GIA report makes a stone easier to sell, but it does not create value the market does not pay.

Are lab-grown diamonds worth it?

Yes, if you buy to wear. For the same budget you get a much larger or higher-grade stone. In the index above, a 2 carat lab-grown round costs about a twentieth of a natural one. Lab-grown diamonds are real diamonds, with the same hardness, brilliance and durability.

No, if you are buying as an investment or expect to sell later for close to what you paid.

It depends if you want a natural stone’s story, or a piece that may pass between generations as an asset. In that case some buyers still choose natural, at a much higher price.

Are lab-grown diamonds cheaper than natural?

Much cheaper, and the gap grows with size. In the same index, a lab-grown 1 carat cost about 13% of a natural 1 carat, and a 2 carat about 6%. Compare stones of the same shape, size, color, clarity and cut, and check both reports before comparing prices. See the lab-grown vs natural price comparison.

How to buy for value

For retailers and brands

Falling stone prices affect inventory, not only customers. Buying loose stones closer to the time of sale, or ordering to specification against confirmed orders, limits the value you carry. Price lab-grown jewelry on design, metal and service rather than on the stone’s “value”. See how lab-grown diamond quotes vary between suppliers.

Value questions

Written byKai Chen

Sales & Technical Director, NUVU

11+ years supporting global clients with lab-grown diamond product consultation and market analysis.

Credentials: GIA Graduate Diamonds (GD)

About NUVU. NUVU is the international brand of New Perspective Superhard Materials Co., Ltd. in Zhecheng, Henan, China. We grow HPHT lab-grown diamonds in-house and cut, polish and match stones in our own workshop.