Is a lab diamond a fake diamond? Jewellers weigh in

Shopping for a diamond ring can be daunting. Most people approach engagement ring shopping with the understanding that it's going to cost a lot, especially considering the rarity of a diamond. But with new developments in the diamond industry, the creation of a lab diamond has made engagement ring shopping more affordable. But it does beg the question - "Are lab created diamonds fake diamonds?" So let’s set the record straight, asking Toronto based-jewellers. Lab diamonds are not fake. They are chemically, physically, and optically identical to natural diamonds—and they are growing in popularity for good reason.

According to a 2025 report from The Plumb Club, consumers are becoming more aware and open to lab-grown gems, with 49 per cent reporting that they couldn't distinguish the difference between a lab or mined diamond. So what might draw people more to lab-created diamonds? Sustainability, price, and transparency, among other things.

But misconceptions still linger.

In this post, we’ll break down what lab diamonds are, how they’re made, why they’re real diamonds, and how they compare to natural and simulated stones like moissanite or cubic zirconia.

What Is a Lab-Grown Diamond?

A lab-grown diamond—also called a lab-created, engineered, or man-made diamond—is a diamond that’s produced in a lab using advanced technology. It mimics the natural formation process by replicating high pressure and high temperature conditions.

There are two main methods:

• HPHT (High Pressure High Temperature)

• CVD (Chemical Vapor Deposition)

The end result? A diamond that is atomically identical to one formed underground. These stones are certified by the same grading labs as natural diamonds, like GIA and IGI, and graded by the same 4Cs: cut, color, clarity, and carat weight.

Lab Diamonds vs. Fake Diamonds

Here’s where the confusion happens. People often use the word “fake” when referring to anything not mined from the earth—but that’s misleading.

Let’s compare:

Lab diamonds are real diamonds. Cubic zirconia and moissanite are “diamond simulants”—they look similar but aren’t chemically the same.

Are Lab Diamonds a Smart Investment?

Lab diamonds can cost 30–50% less than natural ones of the same size and quality. They offer beauty, durability, and ethical peace of mind—but they're not considered rare, so they may not hold resale value like certain natural diamonds.

But if your priority is value, beauty, and ethics—not investment—then lab diamonds are a great option.

Final Thoughts: Don’t Be Fooled by the “Fake” Label

If you’ve ever asked, “Is a lab diamond fake?”—the answer is a confident no. Lab-grown diamonds are real diamonds. They're just created in a way that’s more controlled, ethical, and accessible.

At Leda or Livia Diamonds, we specialize in both lab-created and moissanite engagement rings, all made in Canada. Whether you're choosing based on price, values, or sparkle—we’re here to help you find the perfect fit.

 Ready to Learn More?

Check out our Moissanite vs. Lab Diamond guide or book a free consultation for your dream ring.