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Lab-grown diamonds are real diamonds — the same carbon crystal, hardness and fire as mined stones — created in a controlled environment. Here is how they compare, and how to buy with confidence.

Lab-Grown vs. Natural Diamonds

Lab-grownNatural
CompositionPure crystallized carbonPure crystallized carbon
Hardness (Mohs)1010
OriginGrown in a laboratory (CVD or HPHT) in weeksFormed deep in the earth over billions of years
LookIndistinguishable to the eyeIndistinguishable to the eye
Grading4Cs — commonly graded by IGI and GIA4Cs — commonly graded by GIA and IGI
PriceTypically lower for the same size and qualityTypically higher; rarity drives value
ResaleGenerally lower and less predictableEstablished secondary market

Certification: IGI & GIA

IGI

The International Gemological Institute grades a large share of lab-grown diamonds. Its reports state the stone is laboratory-grown and document cut, color, clarity and carat, often with a laser inscription on the girdle.

GIA

The Gemological Institute of America issues reports for laboratory-grown diamonds that identify origin and describe the stone’s quality characteristics.

Always ask for the grading report and match the report number to the inscription on the stone.

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Our lab-grown collection is coming soon. Design a lab-grown engagement ring with our ring builder or book a consultation to see stones in person.

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Lab-Grown Diamond FAQ

Are lab-grown diamonds real diamonds?

Yes. Lab-grown diamonds are crystallized carbon with the same physical, chemical and optical properties as mined diamonds. The difference is origin: they are grown in a controlled laboratory environment rather than formed underground.

Can you tell a lab-grown diamond from a natural one?

Not by eye. Gemological laboratories identify origin with specialized equipment, and certified lab-grown diamonds carry a report stating they are laboratory-grown.

Which certificates should I look for?

IGI (International Gemological Institute) and GIA (Gemological Institute of America) both grade lab-grown diamonds on cut, color, clarity and carat. Ask us for the grading report of any stone you are considering.

Do lab-grown diamonds hold their value?

Lab-grown diamonds typically cost less than natural diamonds of similar size and quality, and their resale value is generally lower and less predictable. Choose the diamond you love for how it looks and fits your budget.

Can I choose a lab-grown center stone for a custom ring?

Yes — our ring builder lets you compare natural and lab-grown options, and our designers can walk you through stones in person.