You're looking at engagement rings and you keep seeing the same question everywhere: lab grown or natural?
Maybe you've heard lab grown diamonds are "just as good." Maybe you've heard they're "not real." Maybe you're wondering if one holds value better, or if there's a visible difference on the finger.
Here's the short version: lab grown diamonds are real diamonds. They're chemically, physically, and optically identical to natural diamonds. The only real differences are origin and price — and those differences matter a lot depending on your priorities.
This guide walks through everything side by side — the science, the price gap, the ethics, the resale reality — so you can decide with confidence.
What Is a Lab Grown Diamond?
A lab grown diamond is a real diamond created in a controlled laboratory environment instead of mined from the earth. It's made of pure carbon atoms arranged in the same crystal lattice structure as a natural diamond. That structure is what gives every diamond its hardness, brilliance, and fire.
There are two ways lab diamonds are made:
HPHT (High Pressure High Temperature): Mimics the natural conditions deep underground by applying extreme heat and pressure to a carbon seed.
CVD (Chemical Vapor Deposition): A more precise method where carbon gas breaks down in a vacuum chamber and deposits atoms layer by layer onto a diamond seed.
Both methods produce real diamonds. After a few weeks, the rough diamond is cut, polished, graded, and certified — exactly like a natural diamond. The only difference? One took billions of years underground. The other took weeks in a lab.
In Summary: Lab grown diamonds have the exact same chemical composition, crystal structure, and optical properties as natural diamonds. The only meaningful difference is origin.
Are Lab Grown Diamonds Real?
Yes. And this is the most important thing to understand.
Lab grown diamonds are not cubic zirconia. They're not moissanite. They're not simulants or imitations. They are diamonds — pure crystalline carbon, hardness 10 on the Mohs scale, refractive index 2.42 — identical in every measurable way to a natural diamond.
The Federal Trade Commission confirmed this in 2018 when it removed the word "natural" from the official definition of diamond. The Gemological Institute of America (GIA) and International Gemological Institute (IGI) both grade lab grown diamonds using the exact same 4Cs framework they use for natural stones.
A lab grown diamond passes a standard diamond tester. It scores 10/10 on hardness. It sparkles with the same fire and brilliance. No one — not your friends, not a jeweler with a loupe — can tell the difference by looking at it.
In Summary: Lab grown diamonds are real diamonds. The only distinction is how and where they were created.
Lab Grown vs Natural Diamond: Side by Side
| Factor | Lab Grown Diamond | Natural Diamond |
|---|---|---|
| Composition | Pure crystalline carbon | Pure crystalline carbon |
| Hardness | 10 Mohs scale | 10 Mohs scale |
| Brilliance | Refractive index 2.42 | Refractive index 2.42 |
| Grading | GIA, IGI — same 4Cs | GIA, IGI, AGS — same 4Cs |
| Origin | Grown in lab, 2–6 weeks | Formed in earth, 1–3 billion years |
| Price | 70–85% less | Higher |
| Resale Value | 10–30% of retail | 25–50% of retail |
| Conflict-Free | Yes — fully traceable | Via Kimberley Process |
Lab Grown vs Natural: What's the Same
Chemical Composition
Both are pure carbon arranged in a diamond cubic lattice. There is zero chemical difference.
Durability
Both rank 10 on the Mohs hardness scale — the highest possible. Diamond is the hardest material on earth, whether grown in a lab or mined from the ground. Both resist scratching and wear identically over decades of daily wear.
Brilliance and Sparkle
Light interacts with both the same way. Same refractive index. Same dispersion (fire). Same scintillation. A well-cut lab diamond sparkles just as brilliantly as a well-cut natural diamond — because cut quality determines sparkle, not origin.
Grading and Certification
Both are graded using the same 4Cs: Cut, Color, Clarity, Carat. Both receive certification from GIA, IGI, or other major gemological laboratories.
Color Options
Both are available in colorless grades (D through Z) and vivid fancy colors (pink, yellow, blue, green). Lab grown fancy colors are often more vivid and significantly more affordable.
Lab Grown vs Natural: What's Different
Origin
This is the fundamental difference. Natural diamonds formed 100 miles below the earth's surface over billions of years. Lab diamonds were grown in a laboratory over weeks. The material is identical. The story is different.
Rarity
Natural diamonds are finite. They depend on geological conditions that haven't existed for millions of years. Lab diamonds can be produced as technology scales. This scarcity gap drives most of the price difference.
Price
Lab grown diamonds cost 70 to 85 percent less than natural diamonds of equivalent size and quality.
Here's what 2026 pricing looks like for GIA-certified round diamonds (G color, VS2 clarity, Excellent cut):
| Carat | Natural Diamond | Lab Grown Diamond | You Save |
|---|---|---|---|
| 0.5 ct | $1,800 – $2,500 | $300 – $500 | ~$1,500 |
| 1.0 ct | $4,500 – $7,500 | $600 – $1,200 | ~$4,500 |
| 1.5 ct | $8,000 – $14,000 | $900 – $1,800 | ~$8,000 |
| 2.0 ct | $15,000 – $28,000 | $1,200 – $2,500 | ~$15,000 |
| 3.0 ct | $30,000 – $55,000 | $2,000 – $4,000 | ~$30,000 |
A $3,000 budget buys a 2-carat lab grown diamond or a 0.5-carat natural diamond. This is why 61 percent of engagement rings sold in the US now feature lab grown center stones, according to The Knot's 2026 Real Weddings Study.
Why Are Lab Grown Diamonds Cheaper?
Three reasons.
First, shorter supply chain. Natural diamonds pass through 4 to 5 layers of middlemen. Each layer adds markup. Lab grown diamonds pass through 1 to 2 layers — grower to cutter to retailer.
Second, lower production cost. Growing a diamond in a lab costs a fraction of what it costs to extract and process a natural diamond from the earth.
Third, no manufactured scarcity. Natural diamond pricing has historically been supported by controlled supply. Lab grown production competes on actual cost-to-produce. Prices have dropped roughly 70 percent since 2020 and have now stabilized.
Resale Value: The Honest Truth
Natural diamonds retain 25 to 50 percent of retail on resale. Lab grown diamonds retain 10 to 20 percent. That's a real difference.
But here's the context most articles don't give you: a $10,000 natural diamond loses $5,000 to $7,500 at resale. A $2,500 lab grown diamond of equivalent quality loses $2,000 to $2,250 at resale. The lab grown buyer loses less money in absolute terms.
Most engagement ring diamonds are never resold. They're worn for a lifetime or passed down. If resale matters to you, natural is the stronger choice. If you're buying a ring to wear and love, the resale gap matters far less than upfront savings.
Environmental and Ethical Considerations
Lab grown diamonds are inherently conflict-free. There is no mining, no habitat disruption, no community displacement. The supply chain is fully traceable — you know exactly where and how your diamond was grown.
Natural diamonds from Canada, Botswana, and Australia that are Kimberley Process certified also come with ethical assurances, but traceability varies widely by source.
Lab grown diamonds produce significantly less CO2 per carat — roughly 15 to 50 kg versus 5,000 to 15,000 kg for mined diamonds.
In Summary: Lab grown diamonds offer complete traceability and a smaller environmental footprint. For buyers who prioritize ethical sourcing and sustainability, they're the cleaner choice.
Which One Should You Choose?
There's no wrong answer. Both are real diamonds. Both will last forever.
Choose lab grown if: You want the largest, highest-quality stone your budget allows. Ethical sourcing matters to you. You'd rather put savings toward a honeymoon, a house, or the wedding itself. You don't plan to resell.
Choose natural if: The romance of a billion-year-old natural stone speaks to you. Resale value or heirloom potential matters. You're working with a larger budget and the geological rarity is part of the appeal.
Most couples we work with choose lab grown — not because natural is bad, but because getting a bigger, better stone for thousands less is hard to argue with. Others feel strongly about natural, and that's equally valid.
Frequently Asked Questions
Are lab grown diamonds real diamonds?
Yes. Lab grown diamonds are chemically, physically, and optically identical to natural diamonds. The FTC recognizes them as diamonds. GIA and IGI grade them using the same 4Cs standards.
Can a jeweler tell the difference between lab grown and natural?
Not with standard tools. Only specialized spectroscopy equipment at gemological laboratories can distinguish them. To the naked eye — and even under a loupe — they look identical.
How much cheaper are lab grown diamonds?
Lab grown diamonds cost 70 to 85 percent less than natural diamonds of comparable quality. A 1-carat lab diamond runs $600 to $1,200; a 1-carat natural diamond runs $4,500 to $7,500.
Do lab grown diamonds hold their value?
Lab grown diamonds resell for 10 to 20 percent of retail. Natural diamonds resell for 25 to 50 percent. Neither is a financial investment — both lose significant value after purchase. If you plan to keep your ring, resale value is largely irrelevant.
Are lab grown diamonds ethical?
Yes. Lab grown diamonds have a fully traceable supply chain with no connection to mining, conflict, or community displacement. The environmental footprint is also significantly smaller than mined diamonds.
Ready to Find Your Diamond?
Whether you choose lab grown or natural, the most important thing is getting a well-cut, certified stone that fits your budget and makes you smile every time you look at your hand.
At Lara Jewels, we carry both lab grown and natural diamond engagement rings with GIA and IGI certification. Every stone is hand-selected for quality and brilliance.
Browse lab grown diamond engagement rings or book a free consultation with our diamond experts. We'll help you compare options side by side and find the stone that's right for you.
