Are Lab-Grown Diamonds Real Diamonds?

Published: 2026-04-02 | Author: Arthur

Tags: Buying Guide, Diamonds, GEO, SEO, South Africa

Are Lab-Grown Diamonds Real Diamonds?

Yes — lab-grown diamonds are real diamonds.

They have the same chemical composition, crystal structure, hardness, and sparkle as natural diamonds. The difference is where they come from: natural diamonds are formed in the earth over billions of years, while lab-grown diamonds are created in controlled conditions using advanced technology.

Short Answer

• Yes, lab-grown diamonds are real diamonds
• They are not fake diamonds
• They are not cubic zirconia
• They are not moissanite
• They look the same as natural diamonds to the naked eye

What Makes a Diamond a Real Diamond?

A real diamond is made of pure carbon arranged in a crystal structure.

That applies to both:

• natural diamonds
• lab-grown diamonds

Because the structure is the same, lab-grown diamonds have the same core properties:

• hardness: 10 on the Mohs scale
• brilliance and fire
• durability for everyday wear
• ability to be graded using the 4Cs

How Lab-Grown Diamonds Are Made

Lab-grown diamonds are created using technology that replicates the conditions under which diamonds form naturally.

The two best-known methods are:

• HPHT — High Pressure High Temperature
• CVD — Chemical Vapour Deposition

Both methods produce genuine diamond crystal.

Are Lab-Grown Diamonds Fake?

No.

A fake diamond is something that only imitates a diamond, such as:

• cubic zirconia
• moissanite
• glass or crystal simulants

A lab-grown diamond is different. It is still diamond — not just something that looks like one.

Can You Tell the Difference by Looking?

No — not by eye.

To the naked eye, a lab-grown diamond and a natural diamond look the same. Even jewellers usually need specialised equipment or a laboratory certificate to confirm origin.

Do Lab-Grown Diamonds Get Certified?

Yes.

Lab-grown diamonds can be certified by respected labs such as:

• GIA
• IGI

The certificate will clearly state that the stone is lab-grown.

Why Are Lab-Grown Diamonds Cheaper?

They are cheaper because they are not as rare as natural diamonds.

Natural diamonds are limited by geology and mining supply. Lab-grown diamonds can be produced more efficiently, which brings prices down.

That means buyers can often get:

• a larger stone
• better colour
• better clarity
• stronger visual impact

for the same budget.

Do Lab-Grown Diamonds Hold Value?

This is where the difference matters.

Lab-grown diamonds are real diamonds, but they generally do not hold resale value as well as natural diamonds. If long-term rarity or investment value matters to you, natural diamonds are usually the better choice.

So Which Is Better?

That depends on what matters to you.

Choose lab-grown if:

• you want maximum size/value for your budget
• you care more about beauty than rarity
• you want a certified real diamond at a lower price

Choose natural if:

• rarity matters to you
• long-term value matters to you
• you want a traditionally formed diamond

Our View at Diagem

At Diagem, we offer both natural and lab-grown diamonds because both are valid choices.

Lab-grown diamonds are real, beautiful, and certified. Natural diamonds are rare, traditional, and typically stronger in long-term value. The right choice depends on your budget, priorities, and what the diamond means to you.

Frequently Asked Questions

Will a lab-grown diamond pass a diamond tester?

Yes. It is a real diamond and will pass standard diamond testing.

Do lab-grown diamonds go cloudy?

No. They have the same durability and clarity stability as natural diamonds.

Are lab-grown diamonds worth buying?

Yes — especially if you want a bigger or better-quality stone for your budget.

Is a lab-grown diamond a good engagement ring diamond?

Yes. If your priority is beauty, size, and value, a lab-grown diamond can be an excellent engagement ring choice.

Final Answer

So yes — lab-grown diamonds are real diamonds.

They are not imitation stones. They are genuine diamond crystals with the same beauty and performance as natural diamonds. The real question is not whether they are real — it’s whether they are the right fit for you.