What Are Lab-Grown Diamonds- And Are They Real?

If you’ve been researching jewelry lately, you’ve likely come across the term lab-grown diamonds. Maybe you’ve wondered whether they’re the same as the diamonds you’ve always known. Whether they’re “real.” Whether choosing one means compromising on quality, beauty, or meaning.

The short answer is no. The longer answer is worth understanding — because it changes the way you think about what you’re buying, and why.

What does “lab-grown” actually mean?

A lab-grown diamond is a diamond. Not a simulant, not a substitute, not a piece of glass that looks the part. It is a diamond — made of pure carbon, with the same crystalline structure, the same optical properties, and the same physical characteristics as a diamond formed deep within the earth over billions of years.

The only difference is where and how it was created. Mined diamonds form under extreme heat and pressure beneath the earth’s surface. Lab-grown diamonds are created in a controlled environment that replicates those exact conditions — using either High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD) technology. The result is chemically, physically, and optically identical to a mined diamond. Even the most sophisticated gemological equipment cannot tell them apart without specialist testing.

Are they certified?

Yes, and this matters. At Runivi, every lab-grown diamond we use comes with an IGI (International Gemological Institute) certificate. The IGI is one of the most respected independent gemological laboratories in the world, and their certification process grades each diamond on the same four criteria used for mined diamonds: cut, colour, clarity, and carat weight.

We also provide an independent appraisal with every piece. This means you have documentation not just of your diamond’s quality, but of its value — which is important for insurance and for peace of mind.

“A lab-grown diamond isn’t a shortcut to something lesser. It’s a different path to the same destination, and often a better one.”

Why do lab-grown diamonds cost less?

One of the first things people notice is that lab-grown diamonds are significantly more affordable than mined diamonds of comparable quality. This isn’t because they’re inferior, it’s because the supply chain is shorter and the process is more efficient.

Mining a diamond involves enormous infrastructure, global logistics, and decades of geological prospecting. Growing a diamond in a controlled environment removes most of that. The saving is passed on to you, which means you can choose a larger stone, a more intricate setting, or simply keep more of your money without compromising on what you actually hold in your hands.

What about the ethical and environmental question?

This is where the conversation gets genuinely interesting. Traditional diamond mining has a complicated history, from the environmental impact of extraction to the human rights concerns that have shadowed parts of the industry for decades. Lab-grown diamonds sidestep these issues by design.

They require no mining, no displacement of land, and no complex ethical supply chains to navigate. For buyers who care about where their money goes and what it funds — and increasingly, that’s most of us, lab-grown diamonds offer a choice that simply feels better.

At Runivi, this isn’t a marketing position. It’s a founding decision. When our founder set out to build this brand, choosing lab-grown diamonds wasn’t a compromise — it was the whole point. We believe a piece of jewelry should carry no hidden weight. Only the meaning you give it.

So, are they real? They are as real as a diamond can be. Same carbon. Same structure. Same sparkle. Same durability, rated 10 on the Mohs scale, the hardest natural material on earth. The same piece you’ll wear every day, pass down one day, and never once second-guess.

The question was never really about chemistry. It was about trust. And if you’ve read this far, we hope you feel a little more of it.