Do Lab Grown Diamonds Hold Their Value in the UK?

Lab-grown diamonds have become a popular choice for engagement rings and fine jewellery across the UK, offering excellent value at the point of purchase and a visually identical alternative to mined diamonds. As they become more widely available in the UK, many buyers are now asking an important question: Do lab-grown diamonds hold resale value?

The honest answer is that lab-grown diamonds do have some resale value, but it is typically lower than the original purchase price and varies depending on market conditions, diamond quality, and where the stone is sold. Like most fine jewellery, both lab-grown and natural diamonds generally resell for less than retail value, and understanding why this happens is key to making an informed decision.

This guide explains how value really works in the UK market, what you can realistically expect when reselling, and how lab grown diamonds compare to natural diamonds.

Before looking at resale figures, it’s important to understand that “value” in jewellery can mean different things. For most buyers, value falls into three categories:

• Retail value: the price you pay at purchase
• Resale value: what you can recover if you sell later
• Emotional value: the personal meaning and experience attached to the piece

In practice, resale value is where most confusion arises, especially with lab-grown diamonds.

In the UK market, lab-grown diamond rings often achieve resale value around 30% to 60% lower than the original purchase price, depending on the diamond’s condition, specification, and demand at the time of resale. Natural diamonds can sometimes retain a slightly higher percentage of value due to an established secondary market, but they still commonly sell below retail value as well.

There is a common misconception that diamonds, whether lab-grown or natural, hold or even increase in value over time. In reality, diamonds should not be viewed primarily as financial assets.

When you purchase a diamond ring in the UK, the price reflects more than just the stone itself. It includes the expertise involved in selecting, cutting and polishing the diamond, certification and grading, craftsmanship of the setting, as well as retail margin and VAT. These factors are not fully recovered on resale, regardless of diamond type. For this reason, most diamond jewellery, lab-grown or natural, will typically resell for less than its original purchase price.

It is also important to understand that lab-grown diamonds are a relatively new category in the jewellery market. While demand for them is strong at the retail level, the resale market is still developing, which can influence what buyers are willing to pay second-hand.

Rather than viewing a diamond purchase as a traditional investment, it is more accurate to think of it as a lifestyle and emotional purchase. The true value often lies in the meaning behind the piece, the quality of craftsmanship, and the experience of having a ring designed specifically for the wearer.

There are a few key reasons why lab-grown diamonds behave differently on the resale market:

Firstly, production is scalable. Unlike mined diamonds, lab-grown diamonds can be created in controlled environments, and improvements in technology have steadily increased supply. As supply grows, retail prices become more competitive, which naturally affects second-hand pricing.

Secondly, the resale market is still evolving. Many jewellers and buyers continue to prioritise new certified stones, meaning demand for pre-owned lab-grown diamonds is not yet as strong or structured as other luxury categories.

Finally, consumer perception still plays a role. Although lab-grown diamonds are chemically identical to natural diamonds, some buyers still associate long-term value with rarity, which influences resale demand.

Although both types of diamonds look identical to the naked eye, their market behaviour is different.

• Natural diamonds benefit from a long-established global resale market and finite supply, which can sometimes support slightly higher resale percentages. However, they are still not typically sold for the original retail price.
• Lab-grown diamonds, on the other hand, are produced in controlled environments where supply can scale more easily. As production has increased in recent years, retail prices have become more competitive, which naturally affects second-hand pricing.

Read our detailed guide on lab-grown vs natural diamonds

Despite resale considerations, lab-grown diamonds continue to grow in popularity across the UK because they offer clear advantages at the time of purchase.

Most buyers choose them because they can often achieve a larger or higher-quality stone within the same budget compared to a natural diamond. They are also popular among those who value modern sourcing, traceability, and ethical production.

For many couples, especially when buying an engagement ring, the immediate benefits outweigh long-term resale considerations.

In most cases, no. Lab-grown diamonds should not be considered an investment asset in the traditional sense. Instead, they are best understood as luxury purchases where value comes from:

• Design and craftsmanship
• Personal significance
• Visual quality and enjoyment

While resale is possible, expectations should remain realistic. The primary return on investment is emotional rather than financial.

If you do choose to resell a lab-grown diamond, several factors will influence its value:

• Certification (GIA or IGI grading improves trust)
• Cut quality (significantly impacts buyer appeal)
• Carat size and shape (market demand varies)
• Overall condition of the ring
• Current demand in the secondary market

Even with strong specifications, resale value is still influenced by broader market conditions.

While resale value is worth understanding, it should not usually be the primary factor when choosing a diamond. A diamond ring is not typically purchased as a financial asset, but as a personal and emotional investment. The majority of its value lies in how it is worn, experienced, and appreciated over time.

That said, it is still sensible to have realistic expectations. If resale value is a key concern, natural diamonds may offer slightly stronger long-term market recognition. However, if your focus is on design, size, and overall value at the point of purchase, lab grown diamonds often provide a more accessible option.