Can You Resell Lab-Grown Diamonds? (Ethical Investment Guide)

Lab-grown diamonds are chemically and physically identical to earth-mined diamonds. The difference is that while earth-mined diamonds can take thousands of years to form, are in limited supply, and are often linked to shady mining conditions, lab-grown diamonds are formed in a laboratory setting using one of two types of technology: Chemical Vapour Deposition (CVD) or High Pressure, High Intensity (HPHT). This technology allows jewellers to create an identical diamond in a fraction of the time. We proudly use lab-grown diamonds in our daily wear jewellery and our collection of sustainable engagement rings. 

Lab-grown diamonds are redefining how we think about value in the jewellery industry. While traditionally, value has been linked to resale price, modern consumers are shifting their focus toward affordability, sustainability, and ethical sourcing—areas where lab-grown diamonds truly shine. 

Lab diamond market trends are optimistic looking at the past three years: “Lab-grown supply has only accelerated —global LGD (lab-grown diamond) production, specifically produced for use in jewellery, is forecasted at almost 30 million rough carats in 2025, which would be up from an estimated 26 million carats in 2024 and just 17 million in 2023.” Source: Paul Zimnisky, Diamond Analytics.

Lab-grown diamonds are also 60-80% cheaper than earth-mined diamonds (depending on specifications), offering upfront savings without sacrificing quality​. This means buyers get more for their money from the start, making these diamonds an excellent long-term choice for those prioritising beauty and responsible consumption. 

Note: Can you resell a lab-grown diamond? Of course! However, at Fyne, our use of high-quality materials and bespoke design process focuses on creating a lifelong piece that will be passed down for generations to come.  

Lab-grown diamonds often have a lower resale price than earth-mined diamonds. However, it’s important to understand that this is the case with all jewellery, whichever metal or gemstone you buy. For example, mined diamond prices have fallen around 30% in the last 2 years alone. Additionally, jewellers will put their margin on an earth-mined diamond, too, meaning that as soon as you walk out the store, the diamond’s value will already have decreased if you were to resell it. As such, experts say that investing in jewellery to make money in the long run is not the wisest choice. 

A note from Aya (Fyne’s Founder): “ In general, jewellery isn’t usually an investment (unless it’s a one-of-a-kind piece!). Instead, your purchase is a form of expression and personal attachment to the piece — and the memories it gives you. However, if you’re looking for the wisest way to spend your money, we suggest buying lab-grown diamonds at a fraction of the price of earth-mined diamonds. You can then use the savings made to purchase other assets—which is sensible.”

The resale market for lab-grown diamonds is evolving. As more consumers embrace them, resale channels are gradually expanding. Some forward-thinking jewellers and online marketplaces are beginning to offer trade-in and resale options, particularly as the resale value of lab-grown diamonds is more often linked to demand. As this demand continues to grow, this trend is likely to strengthen.

While lab-grown diamonds may not yet hold the same resale value as mined ones, their increasing popularity and ethical appeal position them as a wise, future-proof investment in personal style and sustainability. For example, if you have a unique, sustainable piece, the right buyer may purchase your item for more than you originally paid. 

Note: Jewellers and other companies that buy second-hand jewellery are unlikely to match your original investment. This is why we recommend buying jewellery you love; buying to sell later might not bring the results you expect, so buy lab-grown diamonds and allocate the 60-80% saving to other assets. Research is key!

When considering diamonds as an investment, it's essential to recognise that their value goes beyond just resale price—factors like affordability, sustainability, and technological advancements are shaping the future of the jewellery industry. 

Lab-grown diamonds offer a unique advantage, providing the same brilliance and durability as mined diamonds while being more financially accessible. Buyers can invest in a higher-quality stone for their budget without the high markups associated with traditionally sourced diamonds. As the demand for ethically produced gems rises with the Quiet Luxury trend and forward-thinking millennials and Gen Zers, lab-grown diamonds continue to gain popularity.

For those wondering, “Do lab diamonds have resale value?” the answer lies in a rapidly evolving market. Trade-in and resale programs are beginning to take force, reflecting the increasing acceptance of lab-created diamonds in the industry. As innovation drives the jewellery market forward, lab-grown diamonds represent a wise investment in timeless beauty and responsible sourcing, making them an excellent choice for those looking to align their values with their purchasing decisions.

When shopping for jewellery, choosing something you love and want to cherish forever is always best. Although you may be able to resell your lab diamond jewellery at a profit, investing in diamond jewellery shouldn't be a priority if you’re looking to invest your hard-earned cash. Instead, consider using the funds you’ve saved from purchasing a lab diamond to invest in other assets.