Are Lab-Grown Diamonds Real Diamonds? Everything You Need to Know

Yes, lab-grown diamonds are real diamonds. They have the same chemical composition, crystal structure, and hardness as natural diamonds. The only difference is their origin: natural diamonds form in the earth over billions of years, while lab-grown diamonds are created in laboratories using advanced technology.

If you're researching engagement rings, you've likely come across lab-grown diamonds. Choosing the right ring also involves understanding styles, settings and diamond quality. We explore this in our guide on how to choose an engagement ring. 

Over the past few years, lab-grown diamonds have become increasingly popular among modern couples looking for a more sustainable and transparent alternative to traditional mined diamonds.

But understanding why lab-grown diamonds are real and how they compare to natural diamonds, can help you make a more informed choice.

In this guide, we explain what lab-grown diamonds are, how they compare to natural diamonds, and why they have become a popular choice for modern engagement rings.

What Is a Lab-Grown Diamond and How Is It Made?

A lab-grown diamond is a diamond that is created in a controlled laboratory environment using advanced technology that replicates the natural conditions in which diamonds form deep within the earth.

Just like natural diamonds, lab-grown diamonds are made of crystallized carbon. This means they share the same:

• chemical composition
• crystal structure
• hardness
• brilliance

Because their structure is identical, lab-grown diamonds are not imitations or simulants. They are genuine diamonds.

The only real difference between a natural diamond and a lab-grown diamond is how they are formed.

Natural diamonds develop underground over billions of years under extreme heat and pressure. Lab-grown diamonds are created using similar conditions in laboratories, allowing them to form over a period of several weeks.

Are Lab-Grown Diamonds the Same as Mined Diamonds?

Visually, lab-grown diamonds look identical to mined diamonds.
They have the same:

• sparkle and brilliance
• durability
• hardness (10 on the Mohs scale)
• crystal structure

In fact, even trained gemologists cannot distinguish between a lab-grown diamond and a mined diamond without specialized equipment that detects subtle growth patterns.

This is why lab-grown diamonds are graded and certified using the same standards as mined diamonds, including the well-known 4Cs: cut, color, clarity, and carat.

Lab-Grown Diamonds vs Diamond Simulants

One of the most common misconceptions is confusing lab-grown diamonds with diamond simulants such as cubic zirconia or moissanite.

These materials may resemble diamonds visually, but they are completely different substances.

Stone	Composition	Hardness	Real Diamond
Lab-grown diamond	Carbon	10	Yes
Natural diamond	Carbon	10	Yes
Moissanite	Silicon carbide	9.25	No
Cubic zirconia	Zirconium dioxide	8–8.5	No

Unlike simulants, lab-grown diamonds are chemically identical to mined diamonds, which is why they are classified as real diamonds.

How Are Lab-Grown Diamonds Created?

There are two main methods used to grow diamonds in laboratories.

High Pressure High Temperature (HPHT)
This technique recreates the extreme heat and pressure found deep within the earth where natural diamonds form. Carbon is exposed to these conditions until it crystallizes into a diamond.

Chemical Vapor Deposition (CVD)
In this process, a small diamond seed is placed inside a chamber filled with carbon-rich gas. As the gas is heated, carbon atoms gradually bond to the seed, allowing the diamond crystal to grow layer by layer.

Both methods produce diamonds with the same physical and optical properties as mined diamonds. If you're comparing different diamond types, you may also want to understand why lab-grown diamonds are more affordable.

Why More Couples Are Choosing Lab-Grown Diamonds

In recent years, lab-grown diamonds have become increasingly popular, particularly among millennial and Gen Z couples.

There are several reasons for this shift.

Sustainability
Traditional diamond mining can have a significant environmental impact, including land disruption and high resource consumption.

Lab-grown diamonds require significantly fewer natural resources and avoid large-scale mining operations, making them a more environmentally responsible choice.

Transparency
Because lab-grown diamonds are produced in controlled environments, their origin is fully traceable. This transparency appeals to many couples who want greater clarity about where their jewelry comes from.

Better Value
Lab-grown diamonds typically cost 30–40% less than comparable mined diamonds.
This allows couples to choose:

• a larger diamond
• a higher-quality cut
• or a more intricate ring design, while staying within the same budget.

Do Lab-Grown Diamonds Look Different?

Visually, lab-grown diamonds are indistinguishable from natural diamonds.

They display the same brilliance, fire, and sparkle. Because they share the same crystal structure, they interact with light in exactly the same way as mined diamonds.

Lab-grown diamonds are also just as durable. With a hardness of 10 on the Mohs scale, they are perfectly suited for everyday wear and are an excellent choice for lab-grown engagement rings designed to last a lifetime.

Are Lab-Grown Diamonds Certified?

Yes. Lab-grown diamonds are graded by independent gemological laboratories such as IGI (International Gemological Institute) and GIA (Gemological Institute of America).

These organizations evaluate diamonds according to the same criteria used for mined diamonds:

• Cut
• Color
• Clarity
• Carat

Certification ensures transparency and helps buyers understand the exact quality of the diamond they are purchasing.

A Modern Choice for Modern Love

For many couples today, choosing a lab-grown diamond simply makes sense.
They combine beauty, durability, and transparency, qualities that align with how modern couples think about fine jewelry.

At Juna Fae, we believe fine jewelry should celebrate life’s most meaningful moments while reflecting the values of the people who wear it. That’s why our engagement rings are crafted using lab-grown diamonds and recycled 18K gold, designed to be worn, stacked, and cherished for years to come.

Frequently Asked Questions

Are lab-grown diamonds real diamonds?

Yes. Lab-grown diamonds have the same chemical composition and crystal structure as natural diamonds. The only difference is how they are formed.

Can jewelers tell the difference between lab-grown and natural diamonds?

Not with the naked eye. Specialized equipment is required to detect the growth patterns that differentiate lab-grown diamonds from mined diamonds.

Do lab-grown diamonds last forever?

Yes. Lab-grown diamonds have the same hardness and durability as natural diamonds, making them suitable for everyday wear.

Are lab-grown diamonds cheaper?

Lab-grown diamonds are typically 30–40% less expensive than comparable mined diamonds, which allows buyers to choose larger or higher-quality stones.