Are Lab Grown Diamonds Real?

Lab grown diamonds have become one of the biggest trends in the jewellery industry, particularly among couples searching for modern engagement rings. Yet one question continues to come up time and time again:

Are lab grown diamonds real?

Yes, lab grown diamonds are 100% real diamonds. They have the same physical, chemical and optical properties as natural diamonds. The only real difference is how they are formed. Natural diamonds develop beneath the earth over billions of years, while lab grown diamonds are created in advanced laboratory environments using cutting-edge technology.

To the naked eye, even professional jewellers cannot usually tell the difference without specialised equipment. In this guide, we’ll explain exactly what lab grown diamonds are, how they compare to natural diamonds, and why more couples across the UK are choosing them for engagement rings and fine jewellery.

A lab grown diamond is a genuine diamond created in a controlled laboratory environment rather than mined from the earth. Just like natural diamonds, lab grown diamonds are made from carbon atoms arranged in a crystal structure. This means they possess the same brilliance, fire, hardness and sparkle as mined diamonds.

This is an important distinction because lab grown diamonds are not diamond simulants. They are not substitutes such as cubic zirconia or moissanite. Instead, they are chemically and physically identical to mined diamonds. To make this clearer:

• Lab grown diamond → real diamond (carbon structure)
• Natural diamond → real diamond (carbon structure)
• Moissanite → simulant (silicon carbide)
• Cubic zirconia → simulant (zirconium dioxide)

In every meaningful way that matters to jewellery buyers, appearance, durability, and brilliance, lab grown diamonds perform like natural diamonds.

From a scientific standpoint, lab grown and natural diamonds are virtually indistinguishable. Both are made of crystallised carbon, and both rank 10 on the Mohs hardness scale, making them the hardest known natural material.

Where they differ is in their journey of formation. Natural diamonds are created deep within the earth under immense pressure over billions of years. Lab grown diamonds are produced using advanced technology that accelerates this process in a laboratory setting.

For buyers, this means the visual experience remains the same. A well-cut lab grown diamond will reflect light, sparkle, and perform exactly like a mined diamond when set in a ring. Even experienced jewellers often require specialised equipment or certification reports to determine whether a diamond is lab grown or natural.

It is not possible to tell the difference between lab grown and natural diamond simply by looking at them. Both types of diamonds exhibit the same brilliance, fire, and sparkle. These are the qualities that give diamonds their signature sparkle, and they depend far more on cut quality than origin.

Under magnification or laboratory testing, experts may be able to identify subtle growth patterns that indicate whether a diamond was created in a lab or formed naturally. However, these differences are not visible to the naked eye.

This is why certification is important. Grading reports from recognised laboratories confirm whether a diamond is lab grown or natural, along with its cut, colour, clarity, and carat weight.

Lab grown diamonds are made using highly advanced technology that replicates the natural diamond-growing process. Lab-grown diamonds are also known as lab-created diamonds, laboratory-grown diamonds, man-made diamonds, or synthetic diamonds. There are two primary methods used in the industry.

HPHT (High Pressure High Temperature):

This method recreates the intense heat and pressure found beneath the earth’s surface. Carbon is exposed to extreme conditions until it forms into a diamond crystal.

CVD (Chemical Vapour Deposition):

CVD diamonds are grown inside a chamber filled with carbon-rich gases. Layers of carbon gradually build up over time, forming a diamond crystal.

Which method is better? Both methods create genuine diamonds. The quality of the finished stone depends more on the cutting, polishing and grading process than the growing method itself.

Yes, many people consider lab grown diamonds to be a more ethical alternative to mined diamonds because they are created without traditional diamond mining.

• Reduced environmental disruption
• Transparent sourcing
• Conflict-free origins
• Modern, controlled production methods

However, it is important to note that both mined and lab grown diamonds require energy and resources to produce. Responsible sourcing and ethical manufacturing practices remain important considerations regardless of origin.

In recent years, lab grown diamonds have become increasingly popular among couples choosing engagement rings in the UK and beyond. The appeal is not just about price, but also about flexibility and modern values.

Lab grown diamonds typically offer better value for money, allowing buyers to choose larger or higher-quality stones within the same budget. This means more couples can prioritise size, clarity, or design without compromising on overall appearance.

There is also a shift in consumer mindset. Many buyers today are more conscious of sourcing and prefer options that align with sustainability and transparency. While all diamond production has environmental considerations, lab grown diamonds are often seen as a more modern alternative to traditional mining. This growing trend is especially noticeable among younger buyers, as explored in why couples choose lab grown diamond rings.

Ultimately, they offer freedom of choice without sacrificing beauty or durability.

For most jewellery buyers, lab grown diamonds represent a strong balance of beauty, quality, and value. The main difference is often discussed in terms of long-term pricing and resale expectations. Natural diamonds, particularly rare stones, may retain value differently compared to lab grown diamonds. However, engagement rings are rarely purchased as financial investments. They are typically chosen for their emotional significance, design, and personal meaning. When viewed from that perspective, lab grown diamonds provide an opportunity to focus more on what the ring looks like and represents, rather than purely its origin or resale potential.

Buyers interested in resale considerations can learn more about how lab grown diamonds hold value over time.

Lab grown diamonds have simply expanded what is possible. They allow couples to prioritise beauty, size, and design without compromise, while still choosing a real diamond that will last a lifetime.

There is no single “right” choice when it comes to diamonds. The best one is simply the one that feels right for you. Some people prefer natural diamonds for their history, while others like lab grown diamonds for their modern and accessible nature. Both are real diamonds, and both look just as beautiful. 

At Regal in Hatton Garden, we believe the best choice is always the one that reflects your personal taste, lifestyle, and budget. Our attention goes beyond the stone itself, focusing on craftsmanship, fine detail, and the experience behind every piece we create.

Each ring is thoughtfully made in the heart of Hatton Garden, where traditional expertise meets contemporary design. Whether you choose a lab-grown or natural diamond, our commitment remains the same: to help you create something meaningful, beautifully crafted, and uniquely yours. We aim to give you clear, honest guidance so you can explore your options with confidence and make a choice that feels right for you.