Comparing Lab Grown & Natural Diamonds

Lab grown diamonds are created under strict scientific conditions so that they have the same chemical and optical properties as natural diamonds.

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What Is a Lab Grown Diamond?

Lab grown diamonds are diamonds that have the same hardness, brilliance, and other properties as natural diamonds. This is achieved by experienced scientists who work under strict laboratory conditions. Lab grown diamonds can be brought to life in a matter of weeks, whereas natural diamonds form deep in the ground over millions of years.

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Meet the Different Types of Lab Grown Diamonds

The journey begins by taking a tiny carbon seed from an existing diamond. From this starting point, the scientists choose one of two approaches: High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD):

  • HPHT Lab Grown Diamonds: The seed is placed inside a sealed chamber and subjected to intense temperature and pressure in the presence of free carbon atoms. Once the chamber conditions mimic those deep in the ground, the carbon atoms begin to join the seed, creating a lab grown diamond.

  • CVD Lab Grown Diamonds: The seed is placed in a sealed vacuum chamber that is then flooded with a carbon-rich gas, forcing the carbon atoms to eventually settle on the seed. The layers gradually build before a finishing process involving preset pressure and temperature levels is performed.

Both methods are designed to mimic the natural processes that cause diamonds to form, and as such, lab grown diamonds are identical to natural diamonds when viewed by eye. The result is a faster, more efficient way to obtain a rough stone that can then be cut, polished, and set.

Although there may be very subtle growth markers present deep inside the structure of lab grown diamonds, only an expert with specialist knowledge will be able to tell the difference. And even then, the differences are not visible to the naked eye due to the care and attention of the fabrication scientists.

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Are Lab Grown Diamonds Real?

You can safely consider lab grown diamonds to be as real as natural diamonds, but you should also be aware of the misconceptions that are out there:

  • It is not true that a lab diamond is in any way ‘fake’ because it has all of the same
    properties as a natural diamond
  • It is not true that any expert can immediately spot a lab grown diamond. To tell the difference, they need specialist viewing equipment and enough time for a
    comprehensive study.
  • It’s not true that natural diamonds are stronger because lab grown diamonds and natural diamonds rate exactly the same when tested for hardness.
  • It’s not true that one of the tell tale signs of a lab grown diamond is that it is flawless. Just like a natural diamond, there can be inclusions within the structure.

Both types of diamond are 100% real, have the same properties, and only differ in terms of how they are produced.

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Lab Grown Diamonds vs. Natural Diamonds

A quick comparison will show just how much these two types of stone have in common.

Lab Grown Diamonds
Natural Diamonds
Durability
10 on the Mohs scale
10 on the Mohs scale
Brilliance
Refractive index ranges from 2.417 to 2.419
Refractive index ranges from 2.417 to 2.419
Color
Mostly colorless, but have the potential for vivid shades
Mostly colorless, but comes in shades such as yellow and pink
Grading
Grading focuses on cut, color, clarity, and carat
Grading focuses on cut, color, clarity, and carat
Certification
Always assessed by trusted gemological institutions
Always assessed by trusted gemological institutions
Origin
Created in controlled laboratories before being cut and polished
Formed deep in the ground over billions of years before being mined
Rarity
Produced in increasing quantities as technology improves
Limited quantities as a result of varied geological conditions
Price
Lower cost due to higher levels of availability
Higher cost due to overheads involved with mining

What’s the Difference Between Lab Grown & Natural Diamonds?

A vastly experienced gemologist using specialist high magnification equipment is the only person who will be able to spot the following:

  • Internal Growth Patterns: Slight variations in the octahedral growth pattern.
  • Inclusions: Natural diamonds often include mineral inclusions, while lab grown inclusion tend to be metallic.
  • Laser Inscription: The majority of lab diamonds have a girdle inscription showing their lab of origin.

Unless you are a gemologist with years of experience and you have access to specialist equipment, you will find it impossible to tell the difference. This is because the way that lab grown diamonds are formed is designed to carefully mimic the natural formation process that occurs deep in the ground.

Is a Lab Grown Diamond Better?

There are a number of benefits of lab grown diamonds, including:

  • Sustainability: The laboratories used have tiny carbon footprints compared to the expansive mining operations needed to locate and remove natural
    diamonds.
  • Aesthetics: Lab diamonds have all of the same optical and chemical properties as natural diamonds, allowing them to have exactly the same appearance.
  • Choice: Opting for lab diamonds gives you access to a greater range of hues and tones, as well as more vivid shades, when compared to natural
    diamonds.
  • Value: There are far fewer overheads in the supply chain for lab grown diamonds, resulting in a more cost-effective solution when you want
    something beautiful.

Lab Grown Diamond Certifications

Gemological specialists, such as the Gemological Institute of America (GIA) and the International Gemological Institute (IGI), assess diamonds for cut, clarity, carat weight, etc. They use the exact same grading process for natural diamonds and lab grown diamonds, ensuring that everyone who opts for the sustainable option of a lab grown stone can sleep with peace of mind. Exactly what you want to hear when you’re looking to get something that is everything you want it to be.

How to Choose: Lab Grown or Natural Diamonds?

Because of the identical nature of the physical and optical properties, the choice comes down to one that is focused more on personal tastes and values:

  • Our skilled gemologists recommend lab grown diamonds if you are looking to focus more on sustainability and affordability.
  • Our skilled gemologists recommend natural diamonds if you are looking to focus more on tradition and the romanticism of something forming over millions of years.

Regardless of which path you take, we can help you to navigate it in a way that is sure to make you smile for a lifetime.

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