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Lab Grown Diamonds vs Natural Diamonds: How to Choose the Right One for You

by ShunHuang 25 Dec 2025

Lab Grown Diamonds vs. Natural Diamonds: What’s the Difference and Which Should You Choose?

Choosing a diamond today is no longer a simple decision between size and sparkle. With the rise of lab grown diamonds, many buyers are asking the same question: what is the real difference between lab grown and natural diamonds?

In this guide, we’ll break down how lab grown diamonds are made, how they compare to natural diamonds, and how to decide which option best fits your values and lifestyle.

difference between lab grown diamond and nature diamond

What Is a Lab Grown Diamond?

A lab grown diamond is a real diamond created in a controlled laboratory environment. Chemically, physically, and optically, lab grown diamonds are identical to natural diamonds, offering the same hardness, brilliance, and fire.

The only difference lies in origin. While natural diamonds form deep within the Earth over billions of years, lab grown diamonds are created in a matter of weeks using advanced technology.

Explore our curated selection of lab grown diamond jewelry to experience modern craftsmanship with timeless beauty.

Close-up of lab grown diamond brilliance

How Are Lab Grown Diamonds Made?

HPHT (High Pressure High Temperature)

This method recreates the intense heat and pressure found deep inside the Earth. Carbon atoms bond to a diamond seed, crystallizing into a diamond over time.

CVD (Chemical Vapor Deposition)

CVD diamonds are grown layer by layer in a vacuum chamber filled with carbon-rich gases. Some CVD diamonds undergo post-growth treatments to enhance clarity and color.

Both methods produce high-quality diamonds that are indistinguishable from mined diamonds to the naked eye.

HPHT and CVD lab grown diamond process

Lab Grown Diamond vs. Natural Diamond

Feature Lab Grown Diamond Natural Diamond
Durability 10 on the Mohs scale 10 on the Mohs scale
Brilliance Refractive index 2.417–2.419 Refractive index 2.417–2.419
Certification IGI / GIA certified IGI / GIA certified
Origin Grown in laboratories Formed over billions of years
Price More accessible Higher due to rarity
igi certificate

Can You Tell the Difference?

To the naked eye, lab grown and natural diamonds look exactly the same. Only trained gemologists using specialized equipment can identify subtle growth patterns or inscriptions.

All Rayonu diamonds are independently graded. Learn more about our standards on the IGI Certification & 4C Diamond Quality page.

Why Choose Lab Grown Diamonds?

  • Sustainable: No mining, reduced environmental impact.
  • Identical Beauty: Same brilliance and durability as natural diamonds.
  • Better Value: Larger or higher-quality stones within your budget.
  • Creative Freedom: Ideal for custom designs and unique colors.

Sustainability is central to our philosophy. Learn more on our About Rayonu page.

Woman wearing lab grown diamond ring lifestyle

Which Diamond Is Right for You?

There is no single right answer. Lab grown diamonds are perfect for those who value innovation, sustainability, and value, while natural diamonds appeal to those drawn to rarity and tradition.

If you’re creating something personal, explore our Custom Design Your Ring experience and bring your vision to life.

Custom lab grown diamond ring design

No matter which you choose, a diamond remains a timeless symbol of love, freedom, and individuality.

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