Lab Grown Diamond vs Natural Diamond: Complete Comparison Guide (2026)

May 24, 2026

Short Answer: Chemically, physically and optically identical, a lab grown diamond is just a pure carbon crystal like its natural diamond counterpart with the same hardness, sparkle and brilliance. The only substantial difference is in origin: a lab created diamond is also produced in a matter of weeks under intense heat and pressure, while a natural diamond forms deep within the earth- usually around 100 miles-deep- over billions of years. The most obvious difference in practical terms is price — a lab grown diamond costs 70–80% less for the same quality as natural diamonds. A 1 ct certified lab grown diamond in India in 2026 will cost ₹25,000–₹80,000 whereas a same quality natural diamond costs ₹1,80,000–₹3,00,000.

Whether your buying a diamond (for an engagement ring, anniversary gift or investment) and you're torn between a lab grown diamond vs natural one; this guide has all the info you need to make the right choice. We don't use any marketing jargon — just raw comparisons.

About the Writers: Team Goenka Jewellers Let's dive in.

Lab Grown Diamond vs Natural Diamond — Summary Table

|Property | Lab Grown Diamond | Natural / Mined diamond |

| --- | --- | --- |

What it does | Naturally identical diamond | Diamond grown artificially and then sold as natural diamond

| Chemical Shorthand | Pure Carbon (C) | Pure Carbon (C) |

| Hardness (Mohs scale) | 10|10 |

| | Refractive index | 2.42 | 2.42

| Sparkle & brilliance | Same | Same |

| Time to assemble | 4–8 weeks | 1 billion → 3 billion years |

| Certification | IGI, GIA | IGI, GIA |

| 1 ct cost (India 2026) | ₹25,000–₹80,000 | ₹1,80,000–₹3,00,000 |

Environmental impactLowHigh (mining required)

| Resale | Low (15–25% of retail) | Moderate-high (40–60% of retail)|

Visual difference — none (even to experts) — none (even to experts)

| The same budget but bigger | 3–4× | smaller

| Subjected To Same Tests | Similar Results | Similar Results

Big takeaway: A lab grown diamond is not a "fake" diamond, nor an alternative to a diamond. It's a diamond — just made differently. The answer may depend on your budget, on what matters to you, and your own personal wants.

It is important to distinguish between lab grown diamonds and natural diamonds.

What is your most common question at Goenka Jewellers?

The answer is yes. A lab grown diamond is a real diamond—100 percent.

Lab grown diamonds are officially identified as real diamonds by the Federal Trade Commission in the USA, IGI and GIA and the Bureau of Indian Standards (BIS) all recognize lab grown diamonds as actual diamonds. The only legal obligation — and it really is quite an obligation — is that the diamond is unambiguously labelled on its certificate as "laboratory grow" (this may differ from the precise term used in each jurisdiction) of origin to the buyer.

Here's what makes them the same:

Identical atomic structure — either crystalline carbon in a cubic lattice

Identical physical propertiesSame density (3.52 g/cm³), same hardness (10 on Mohs), same melting point (3,550°C).

Same optical properties — Same refractive index (2.42), same dispersion (0.044), same fire and brilliance

Conduct heat the same (Both will register the same on a diamond tester)

Identical certification criteria — graded on the same 4Cs (cut, colour, clarity, carat weight) by the same gemological laboratories

A jeweller, with a 10x magnification loupe, cannot tell a lab grown diamond from a natural diamond just by looking. To determine the origin, specialised equipment such as DiamondView or photoluminescence spectroscopy is needed — which is just how IGI and GIA check and certify lab grown diamonds.

Introduction: What Are Lab Grown Diamonds and How To Make Them?

Of the different technologies out there, two dominate the industry and by 2026 are mature from a commercial-scale quality standpoint.

CVD — Chemical Vapour Deposition

Inside a sealed reactor is placed a diamond "seed". Methane and hydrogen, typically carbon-rich gases, are pumped in and heated to around 800 °C; the gas decomposes and carbon atoms holographically condense progressively on the seed until a whole diamond crystal has assembled (over 4–8 weeks). For high clarity, larger lab grown diamonds, CVD is used for most of them today.

HPHT - High-Pressure High Temperature

This technique mimics the natural environments deep within the earth where natural diamonds are formed. Bringing a carbon source to 1,500°C and pressure of 5–6 gigapascals. And it is at these extreme conditions that carbon crystallises as diamond. Most HPHT is utilized for the highest grade D-colour diamonds and fancy coloured diamonds.

However, both ways produce certified diamonds and therefore real diamonds. By the time a buyer is choosing between two diamonds, how they got their size is rarely the key deciding factor — it is the 4Cs of the final stone that dictate its value.

How Are Natural Diamonds Formed?

Natural diamonds existing around 150–200 kilometers beneath the earth's surface at exceptionally high temperatures (1,050–1,300 °C) and pressure. It happens over a period of 1 to 3 billion years. During millions of years, these diamonds were moved towards the surface in kimberlite pipes so they can be mined up primarily in: Botswana, Russia, Canada, Australia and South Africa.

Natural diamond supply chain — long and consumptive:data: If you are not familiar with the natural diamond supply chain take a closer look at an extract I shared in my last post.

Geological surveying — Also searching for kimberlite pipes (5–10 years)

Mining — excavating millions of tonnes of rock by open-pit or underground mining;

Only 1 in every Million carats mined is cut and considered quality

At this point, polishing takes place – usually in Surat, India (the world capital of diamond polishing)

Distribution — via wholesalers, retailers and final consumers.

This whole sequence of events is exactly why an natural diamond is priced so the differently than a lab grown one. You are paying for billions of years of geological time, environmentally destructive extraction and a strict supply chain — not anything that makes the actual diamond itself "better."

Lab Grown Diamond vs Natural Diamond — Price Comparison (INDIA 2026)

This is where the value narrative becomes indisputable. Equal quality, equal certification — yet widely diverse prices.

1 Carat Diamond Price Comparison

| --- | --- | --- | --- |

Loose stone of 0.50 ct | ₹18,000–₹35,000 | ₹85,000–₹1,50,000 | 75–80%

| Loose Halo | 1.00 ct total weight | ₹38,000–₹55,000 | ₹1,80,000–₹3,00,000 | 75–82%

| 1.50 ct free stone |₹65,000–₹90,000| ₹3,50,000–₹5,50,000|80–85%|

| 2.00 ct loose Gem in ₹90,000--₹1,40,000 | ₹6,00,000–₹9,50,000 | 82--87% |

Both stones from 2016 and other loose diamonds typically found in the same size range (3.00 ct); price in ₹ and rough value (by calc):| 3.00 ct loose stone | ₹2,00,000–₹3,00,000 | ₹14,00,000–₹22,00,000 | 86–88% |

In fact, the higher the carat size grows, the more these savings stack up naturally because lab grown diamond prices scale linearly while natural diamond prices scale exponentially.

What This Means in Practice

So for a buyer with ₹3 lakh in hand, there are two straight choices:

The natural diamond route: a 0.50–0.70 ct mined diamond engagement ring

The Lab grown diamond route: A 1.50–2.00 ct lab grown diamond ring with a certificate

Same style, same quality gold, platinum, same skillful setting, same sparkle — yet the lab grown diamond is obviously three-times bigger to the eye of anyone viewing the ring. The sheer prices at which lab grown diamonds can be bought is the number one reason why lab grown diamond products have seen tremendous growth in India over the past 3 years.

Lab Grown Diamond vs Natural Diamond; How to Identify?

You can't. Not via eye, not by loupe, not by basic diamond tester.

Here's what does NOT work:

Observations by Naked Eye : Both looks same in sparkle, Same fire and brilliance.

10x jeweller's loupe: they both show the same internal characteristics.

Common diamond tester: both pass — both with similar thermal and electrical conductivity.

Refractive index test — 2.42 on both readings.

Scratching: Mohs scale both get 10

Here's what DOES work:

DiamondView (Patterns of UV fluorescence)– IGIwith the association between DiamondView and GIA

Photoluminescence spectroscopy: a method to identify unique defects in lab-grown materials

DiamondSure / DiamondPlus screening-used in commercial certification labs

It is through these testing processes that each and every lab created diamond are given the relevant identifications by IGI and GIA. This is why certification matters. Any diamond, be it an AKYA or Siroya diamond, request for IGI даара

Resale Value — Lab Grown Diamond vs Natural Diamond

There is one niche where natural diamonds come up trumps.

Natural diamonds resale value: usually 40–60% of the original retail price. This can be a diamond purchased for something like ₹2 lakh, and it may be resold for ₹80,000–₹1,20,000 later depending upon buyer, certification and market conditions after 5-10 years.

Resale value of lab grown diamond: 15–25% of original retail price In India, the lab grown diamond resale market is still evolving and many jewellers only offer buyback at a heavy discount as there are newer lab grown diamonds entering the market all the time.

Some context: Lab grown diamonds and natural diamonds are not great investments long term. Both, immediately lose their value the moment you exit the shop. For long-term value preservation gold is a much better bet, and remember it can be melted down and converted back into new jewellery with its value intact.

The appropriate way to look at this: purchase a diamond for the reason that you appreciate it, you wish to put on it, instead of thinking about selling it for financial gain. When you make that by the carat of diamond, the 70–80%+ upfront saving on a lab grown diamond is worth much more than a slightly better resale percentage on a natural one.

Environmental & Ethical Comparison

This is ever so important for the modern day buyer.

Natural Diamond Mining

More than 1,000 tonnes of rock must be moved to find one carat of mined diamond.

High water consumption and land disruption

Energy-intensive extraction and transport

Suspicion due to past issues with conflict diamonds (largely ameliorated by the Kimberley Process but not completely eradicated)

Displacement — mining and labouruntungan

Lab Grown Diamonds

No mining required

Water and land Impact well below the baseline

More of the energy used to grow diamonds is sourcing from renewables (solar power in many Indian labs)

Transparent, traceable supply chain

No conflict or sourcing concerns

Lab grown diamonds provide a cleaner story for the ethically and environmentally conscious consumer. To that end, most of the risks posed by conflict diamonds in the naturals trade are now mitigated via relevant initiatives such as the Kimberley Process and major retailers largely source from verifiable sources.

When Should You Opt For Lab Grown Diamond?

If: — A lab grown diamond makes sense.

This is regarding the Budget You want maximum Carat or Quality with your money

Size is important; a large stone has more bling value

You care about ethics: lab-created over mined

Their view of jewels as something that must be worn rather than be seen as an investment.

You want certified cheaper — 70–80% lower IGI-certified

You are buying for either to wear every day or getting engaged: buyers today prefer lab grown pretty much in all these cases

When To Go For a Natural Diamond?

Then a natural diamond will fit the bill if you want:

Tradition is deeply felt — you needed an earth grown stone

It is a heritage — you want an heirloom, which has been passed down through generations with the provenance « natural »

Bit more resale value — and you may want to sell or swap in the future

Money is not an issue — you can easily pay for the upgrade

Part of the allure to you is the geo-story — this dirt has billions of years on it

There is no wrong choice. Both are real diamonds. Both are beautiful. Both come with certification. The best choice is whatever works for your life and your budget and your values.

Lab Grown Diamond vs Moissanite vs Cubic Zirconia — In Short

To clarify, here is what a lab grown diamond is NOT;

Diamond (pure carbon) — lab-grown diamond Same as natural diamond.

Moissanite: Silicon carbide. Diamond simulant — looks the same but is a different mineral. Differences in more "rainbow" fire, lighter, greater optical properties (and slight colour effects).

Cubic Zirconia (CZ): Zirconium dioxide. Answer: A very different substance that appears like diamond, except without any of the hardness, scintillation, and durability associated with a real diamond.

Lab grown diamond should be put into a different class than moissanite or cz. It is an actual diamond; moissanite and CZ are not.

Table of ContentsWhy Buy Your Lab Grown Diamond from Goenka Jewellers?

Every lab grown diamond listed at Goenka Jewellers comes with an IGI certification, is handpicked for cut brilliance and are sold with a clearly specified breakup of prices. But you'll have a clear price to stone, gold and craftsmanship — with zero hidden markups, inflated MRPs or upselling on imaginary grades.

We offer:

IGI-certified freeform lab grown diamonds in all 4C qualities

Kimaya Lab Grown Diamonds – You can customize lab grown diamond rings, pendants, earrings and tennis bracelets.

14K, 18K, and platinum settings

BIS-hallmarked gold on every piece

Invoice with a transparent pricing breakup

Lifetime exchange policy

Whether you're on a quest for your first engagement ring, or shopping for an upgrade to a statement solitaire, our team take you through your choices at every budget - from affordable entry level pieces at ₹40,000 to premium solitaires reaching up to ₹5 Lakh.

Frequently Asked Questions

Q: Is lab grown diamond a real diamond? Yes. A lab cultivated diamond is chemically, physically, and optically identical to a mined diamond. Its hardness (10 on the Mohs scale) and sparkle are identical, thanks to their certification from gemological institutes such as IGI and GIA. Only the origin is different, lab rather than earth.

Q. Lab diamond price differential to natural diamond? Lab grown diamonds can be 70–82% cheaper than natural diamonds of the same standard. In India, for example — a 1 carat natural diamond costs ₹1.8–3 lakh; a 1 carat lab grown diamond of equal quality costs ₹38,000–₹55,000.

Q. Hence, can a jeweller differentiate between lab grown diamonds and natural diamonds? Not by eye and not by basic equipment. DiamondView and photoluminescence spectroscopy are features solely in use when identifying the origin of a managed diamond. This is just how IGI and GIA engrave and categorically combinations lab grown diamonds in their scientifically validated documents.

Do lab grown diamonds get cloudy or lose sparkle over time? No. Lab grown diamond necklace continues to shine, sparkle or cloud hazed away with age. Providing you take care — occasional wash in mild soap and water — it will keep its sparkle for a lifetime, just like a natural diamond.

Q. Lab grown vs natural for engagement rings, which is better? With the Same Budget Modern Indian couples prefer lab grown diamond engagement rings as they get a much bigger, beautiful stone. They are both genetically the same diamond, and they are both pretty! Ultimately, the decision you make comes down to what is more important for you — size and savings (lab grown) versus sentimentality and resale (natural).

Q. Do lab grown diamonds hold their resale value? Yes, but limited. In India, resale value for lab grown diamond is presently around 15–25% of original retail; information for the equivalent on natural stone is over 40–60%. That being said, neither is a good buy. Gold retains value far better than any diamond if you care about long term value.

Q. Are lab grown diamonds a scam? No. According to the Federal Trade Commission, IGI, GIA and the Bureau of Indian Standards (BIS), lab grown diamonds are authentic diamonds. That simply helped by the clear label — it reads "laboratory grown" on the certificate so that buyer knows where it came from.

Q. Are lab grown diamonds graded in the same way as natural diamonds? Yes. This is marked by IGI, GIA and several other standard labs on a common 4Cs basis (cut, colour, clarity, carat). The format of certificate is same — only origin field is different.

Q. Why prices of lab grown diamond will drop further? Lab diamond prices fell about 30% from 2022 to 2025. In 2026, meanwhile prices have settled near the production cost floor. The consensus of analysts anticipate stable prices consistently through 2027–8 with only marginal further declines as the efficiency of production continues to grow.

Q. What is the reason that natural diamonds are 7-10 times more expensive than lab grown diamonds? Natural diamond prices are a reflection of mining cost, supply chain control, and heritage marketing — not anything that gives the diamond itself some intrinsic "better" property. This is because lab grown diamonds have a much shorter supply chain, there's no mining costs and also no artificially created scarcity. Both are real diamonds.

Q. Which is more ethical — lab grown or grown in nature? The ethical story for lab grown diamonds is less murky — no mining, supply chain transparency, lower carbon footprint. The Kimberley Process has been successful in minimizing the risk of conflict diamonds from entering the natural diamond trade, but lab growns completely take that out of the equation. Lab grown is the cleaner option for those that are ethically minded.

All About Lab Grown Diamonds in India

India 1 Carat Lab Grown Diamond Price

2 Carat Lab Created Diamond Cost in India (coming soon)

Last updated: May 2026. All prices are indicative, based on IGI-certified diamonds and reference the Indian market. The final price you pay, will vary from one stone to another, weight of the metal and the gold rate on that day when you purchase. For an individual quote, reach out to the Goenka Jewellers team.