Lab vs Natural Diamonds

Learn the key differences between lab-grown and natural diamonds so you know what to choose between them.
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Lab vs Natural Diamonds

Learn the key differences between lab-grown and natural diamonds so you know what to choose between them.
Money-back
guarantee
GIA certified
diamonds
#1 on
Trustpilot
Free insured
shipping

What’s inside this guide

  • 01.
    Lab grown vs natural
  • 02.
    Value & pricing
  • 03.
    Visual difference
  • 04.
    Certification & grading
  • 05.
    FAQ's
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01.Lab vs. Natural

Lab-grown vs. natural diamonds

This is one of the most-debated topics in the diamond business right now.
Lab-grown diamonds are chemically, physically, and optically identical to natural diamonds. They have the same crystal structure, hardness, and sparkle. The difference is in the origin: one formed over billions of years underground, the other was created in a lab over a few weeks. A certified gemologist would need specialized equipment to tell them apart.
So why the price gap? Jewelry quality natural diamonds are rarer and have supply chain constraints built in to keep prices artificially high. Lab-grown diamonds have scale and efficiency on their side. Neither is “fake” - they’re both real diamonds. It comes down to what you value.

RARE CARAT PRO TIP

There's no universally “right“ choice here. If you care about getting the biggest, most impressive stone for your budget, lab-grown is a no-brainer. If tradition, rarity, or long-term value matters to you, go natural. We carry both - because we think the choice should be yours, not ours.
Natural diamond
Lab-grown diamond
Composition
Pure carbon crystal
Composition
Pure carbon crystal
Hardness
10 (Mohs scale)
Hardness
10 (Mohs scale)
Visual difference
None, identical to the eye and under magnification
Visual difference
None, identical to the eye and under magnification
Price (1ct, Ideal)
$1,100 - $10,000
Price (1ct, Ideal)
$400 - $1,200
Resale value
Retain ~30% - 50%
Resale value
Lower than natural
Origin story
1-3 billion years, deep Earth
Origin story
2-6 weeks, laboratory
Environmental
Mining impact varies
Environmental
No mining
Certificate
GIA, IGI
Certificate
GIA, IGI, GCAL
Best for
Tradition, resale, heirloom
Best for
Value, size, ethical sourcing

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02.Value & Pricing

Understanding the price difference

Because lab-grown diamonds do not have the same supply chain constraints and mining costs as natural diamonds, they are significantly more affordable.
On average, a lab-grown diamond can cost 50% to 80% less than a natural diamond of the exact same size and quality.
This means if you choose a lab-grown diamond, you can typically afford a much larger stone or a higher quality grade (better cut, color, and clarity) while staying within the same budget.

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Choosing a lab-grown diamond allows you to significantly upgrade your carat weight without sacrificing color or clarity. You get the exact same optical and physical properties, just more sparkle for your spend!
Lab-Grown
$850
VS
Natural
$6,000
You save 86% with Lab-Grown
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03.Visual Difference

Can you tell the difference?

In most cases, it is extremely difficult to visually tell the difference between lab-grown diamonds and natural diamonds. Lab-grown diamonds possess the same physical, chemical, and optical properties as natural diamonds, making them nearly indistinguishable to the naked eye.
If you compare one earth mined and one lab created diamond of the same color and clarity, there is no difference. In fact, lab created diamonds have reached such fantastic qualities that even professional diamond graders without sophisticated equipment will have no chance of telling them apart.
Lab grown diamonds pass standard diamond testers since their thermal conductivity is identical to that of natural diamonds.

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Even experienced gemologists need specialized equipment to tell the difference between a natural and lab-grown diamond. To the naked eye—and even under a standard jeweler's loupe—they are visually identical. Buy the diamond that looks most beautiful to you!

Spot the difference

One is a Natural diamond. One is Lab-Grown. Can you tell which is natural diamond?

Diamond A
Diamond A
VS
Diamond B
Diamond B
04.Certification

Do lab diamonds get GIA graded?

While it is impossible by looking at the diamonds alone, gemological laboratories such as GIA and IGI have figured out reliable ways to test for them. With sophisticated pieces of equipment such as fluorescence patterns and infrared absorption spectroscopy, gemological labs can reliably separate LGD diamonds from naturally mined ones.
Yes, lab-grown diamonds can be certified by the Gemological Institute of America (GIA) or other reputable gemological laboratories. GIA offers grading reports for both natural and lab-grown diamonds.
The GIA grading report for lab-grown diamonds includes information about the diamond's color, clarity, cut, carat weight, and other relevant characteristics. This certification provides assurance and transparency regarding the quality and specifications of the lab-grown diamond. If you are ever in doubt about a diamond's origin, send it to a gemological laboratory and let the professionals handle it.

RARE CARAT PRO TIP

Always ensure your lab-grown diamond comes with an independent grading report from a reputable lab like GIA or IGI. This guarantees you are getting exactly the quality you paid for, and it provides peace of mind for your purchase.

Anatomy of a Lab Certificate

Just like natural diamonds, lab-grown diamonds receive official grading reports from top labs like IGI and GIA.

LABORATORY GROWN DIAMOND REPORT
IdentificationLaboratory-Grown
Clearly stated origin so you always know what you're buying.
Grading ResultsCarat, Color, Clarity, Cut
Graded on the exact same scale and strict standards as natural diamonds.
Inscription(s)LABGROWN IGI LG123456
A microscopic laser inscription on the diamond matches this report perfectly.
05 · FAQS

Frequently asked questions

Ready to pick your perfect diamond?

Whether you choose the billions-of-years history of a natural diamond or the incredible value of a lab-grown diamond, our gemologists are here to help you find the perfect stone.