Lab Grown vs. Natural Diamonds — Which Should You Choose?

One of the questions I get asked most often is this: should I choose a lab grown or a natural diamond?

It's a good question, and one that deserves an honest answer, not a sales pitch. The truth is, there is no universally right answer. It comes down to what matters most to you, and that's something only you can decide. What I can do is give you the information you need to make that choice with confidence.

What is a lab grown diamond?

A lab grown diamond is a real diamond. It is not a simulant like cubic zirconia or moissanite — it is chemically, physically, and optically identical to a diamond formed in the earth. The only difference is where it was made.

Lab grown diamonds are created in controlled laboratory environments using one of two processes — High Pressure High Temperature (HPHT) or Chemical Vapour Deposition (CVD) — both of which replicate the conditions under which natural diamonds form. The result is a stone with the same hardness, the same brilliance, and the same fire as any diamond pulled from the ground.

What is a natural diamond?

A natural diamond is formed over billions of years deep beneath the earth's surface, under extreme heat and pressure. It is then carried upward by volcanic activity and eventually mined. No two natural diamonds are exactly alike, each carries its own unique internal characteristics, known as inclusions, that make it entirely one of a kind.

There is something undeniably special about wearing a stone that took the earth three billion years to create. For many people, that origin is part of the meaning.

The key differences

When it comes to appearance and quality, there is no visible difference between a lab grown and a natural diamond. A trained gemologist using specialised equipment can distinguish them, but to the naked eye, and even under a loupe, they look the same. Both are graded using the same criteria: cut, colour, clarity, and carat weight.

Where they differ is in price and in what happens to their value over time.

Lab grown diamonds are significantly more affordable — typically 50 to 70 percent less expensive than a comparable natural diamond. This means that with the same budget, you can often choose a larger stone, a higher colour grade, or a better clarity than you might otherwise consider. For many of my clients, this is what makes lab grown diamonds so appealing, particularly for engagement rings where the size and appearance of the stone matters.

Natural diamonds, on the other hand, have historically retained their value better over time and tend to hold stronger resale value. They are rarer, and their supply is finite. For those who see their jewellery as an heirloom to be passed down — or who simply value the geological story behind a stone — a natural diamond carries a weight that goes beyond its physical properties.

What about ethics and sustainability?

This is a question I take seriously. At Othilia Jewels, we work exclusively with conflict-free diamonds and use recycled gold across our collections. Both lab grown and natural diamonds can be sourced ethically, and both can be sourced irresponsibly — so the key is always to ask questions and choose a jeweller who can answer them.

Lab grown diamonds do have a smaller land-impact footprint, as they do not require mining. However, they are energy-intensive to produce, and the environmental impact depends heavily on the energy source used in the lab. Neither option is without nuance.

So, which should you choose?

If budget is a priority and you want the largest, most brilliant diamond possible for your money, a lab grown diamond is a genuinely excellent choice. The quality is real. The beauty is real. And the meaning you give it is entirely your own.

If you are drawn to the idea of a stone with a geological history, something rare, irreplaceable, and formed long before any of us were here, then a natural diamond may feel more right for you, regardless of price.

Both are beautiful. Both are lasting. And at Othilia Jewels, we offer both, because I believe the choice should be yours to make without pressure.

If you would like to talk through which option suits you, I am always happy to help. You are welcome to book a personal consultation, and we can find the right stone for your piece together.