Lab-Grown Diamonds Now in the Majority of Newly Appraised Engagement Rings in 2026: What the BriteCo Data Means for Indian Buyers

Lab-grown diamonds crossed the majority threshold for the first time in 2026, appearing in 51% of newly appraised engagement rings in the United States during the first half of the year — up from a mere 6% in 2019, according to the BriteCo Jewelry, Diamond & Watch Price Index 2026. For Indian buyers weighing a lab-grown centre stone, this tipping point is more than a headline. It signals a structural market shift that affects pricing, availability, and the long-term resale conversation in India as much as anywhere else.

The BriteCo index draws on appraisal data recorded from January 2019 through June 2026 across all 50 US states and Washington D.C. — making it one of the most granular longitudinal datasets on engagement-ring buying behaviour published to date. Here is how the key metrics have moved over that period:

Metric	2019	2025	H1 2026
Lab-grown share of engagement rings	6%	47%	51%
Median lab-grown diamond price per carat	$4,622	$2,057	—
Median natural diamond price per carat	—	$8,428	,
Median lab-grown engagement ring sales price	,	$4,557	,
Median natural diamond engagement ring sales price	,	$12,961	,
Median centre stone size	1.01 ct	2.0 ct	,
Yellow gold share of jewelry metal	,	39%	,
White gold share of jewelry metal	51%	38%	,
Platinum share of jewelry metal	11%	16%	,

The price gap between lab-grown and natural diamonds — the difference in per-carat cost between a stone grown in a controlled laboratory environment and one mined from the earth — stood at roughly 4:1 in 2025 ($2,057 vs $8,428 per carat). That ratio is the single most important number for any buyer entering the market today.

What exactly is a lab-grown diamond, and how is it different from a natural one?

A lab-grown diamond shares the same chemical composition, crystal structure, and physical properties as a mined diamond — carbon atoms arranged in a cubic lattice — but is produced in a controlled laboratory environment using either High Pressure High Temperature (HPHT) or Chemical Vapour Deposition (CVD) technology. The Gemological Institute of America grades lab-grown diamonds on the same 4C scale (cut, colour, clarity, carat) it uses for mined stones.

What a lab-grown diamond is not is a simulant. Cubic zirconia and moissanite are simulants — they look like diamonds but have different chemical compositions. A lab-grown diamond is, chemically speaking, a diamond. The only difference is origin and formation time: millions of years underground versus a few weeks in a reactor.

For Indian buyers, this distinction matters because Indian jewellery culture places enormous weight on the authenticity of materials. A lab-grown diamond certified by the IGI (International Gemological Institute, which has a strong presence in India) or GIA carries the same grading rigour as a mined stone certificate — the report simply notes the growth method.

Why did lab-grown diamonds go from 6% to 51% in seven years?

The answer is price. The BriteCo data shows the median lab-grown diamond price fell from $4,622 per carat in 2019 to $2,057 per carat in 2025 — a drop of roughly 55% in six years. Natural diamond prices, by contrast, remained elevated at $8,428 per carat in 2025.

That price compression is driven by manufacturing scale. As more CVD and HPHT reactors come online globally — including a significant number in India's Surat diamond belt — the cost of producing gem-quality lab-grown rough has fallen sharply. Reports tracking the lab-grown market noted that lab-grown diamonds made up nearly half of diamond engagement ring sales in the US in 2024, a figure that has since crossed 50% by appraisal count.

The falling price did something unexpected: it made buyers choose bigger stones rather than simply spend less. The median engagement ring centre stone doubled from 1.01 carats in 2019 to 2.0 carats in 2025. Buyers did not pocket the savings — they upgraded the size. Indian buyers are already replicating this pattern: the 1.5 to 2 carat oval lab-grown diamond solitaire has become one of the most searched ring configurations in India in 2026.

What do the two prices in the BriteCo index mean for insurance and resale?

The BriteCo index is built on a distinction most buyers never encounter side by side. Sales price is what buyers typically paid at the time of purchase. Appraised value is the insurance replacement value — what it would cost to replace the piece at retail today. These two numbers are not the same, and the gap between them is significant.

In 2025, the median engagement ring sales price was $6,939 while the median appraised value was $9,676 — a difference of roughly 39%. As BriteCo CEO Dustin Lemick explained: "Every piece of jewelry has two prices. There is the price you paid at the counter, and there is the price it would cost to replace the piece today, which is what insurance is based on. Most people never see both numbers side by side."

For Indian buyers, this has a direct practical implication. If you buy a lab-grown diamond ring in India and insure it, the insurance policy should be based on the replacement value — not the purchase price. Given that lab-grown diamond prices have been falling, the replacement value at the time of a claim could actually be lower than what you paid, depending on how quickly the market moves. This is the opposite of the situation with natural diamonds, where replacement costs tend to hold or rise over time.

Resale is a separate conversation. Industry guides on lab-grown diamond value in 2026 are candid that resale markets for lab-grown diamonds are thinner than for natural diamonds, and that resale prices may decline more rapidly as new supply keeps entering the market. This does not make lab-grown diamonds a bad purchase — it makes them a different kind of purchase, one optimised for beauty and budget at the point of acquisition rather than long-term asset appreciation.

How does the price gap translate to Indian rupees, and what can you actually buy?

The US data gives a useful anchor. A median lab-grown engagement ring sold for $4,557 in 2025 — roughly ₹3.8 lakh at current exchange rates. A median natural diamond engagement ring sold for $12,961 — roughly ₹10.8 lakh. That is a price ratio of approximately 2.8:1 at the ring level (the per-carat ratio is closer to 4:1 because natural diamond rings also tend to carry heavier settings and more side stones).

In India, the price gap is similarly pronounced, though the absolute numbers differ because of import duties, GST (currently 3% on gold and 0.25% on cut and polished diamonds), and retailer margins. Indian lab-grown diamond retailers typically price a 1-carat, VS1, F-colour CVD stone at ₹25,000–₹45,000, while a comparable natural diamond would run ₹2.5 lakh–₹4 lakh or more. The gap is, if anything, wider in India because of the domestic manufacturing base in Surat that keeps lab-grown production costs low.

For buyers looking at specific configurations, our guide to the best lab-grown diamond engagement rings in India in 2026 covers ten picks across every budget, from under ₹50,000 to above ₹3 lakh.

What is driving the shift to yellow gold, and does it matter for Indian buyers?

The BriteCo data shows yellow gold overtook white gold as the most common jewellery metal in 2025 — 39% versus 38% — after white gold held a dominant 51% share in 2019. Platinum grew from 11% to 16% over the same period.

This is a meaningful shift in Western markets, but for Indian buyers it is less surprising. Yellow gold has never lost its cultural primacy in India. The preference for yellow gold in engagement and wedding jewellery is deeply embedded in Indian tradition, and the Western swing back toward yellow gold simply means global design trends are now more aligned with Indian aesthetics than they were a decade ago.

The practical implication: if you are buying a lab-grown diamond ring in India and want a setting that works in both a Western-influenced engagement context and a traditional Indian wedding context, yellow gold is now a defensible choice by global standards — not just a concession to family preference. Our guide to curved solitaire engagement rings covers how metal choice interacts with band style and stone shape.

Are lab-grown diamonds durable enough for daily wear?

This is one of the most common questions Indian buyers ask, and the answer is straightforward. Lab-grown diamonds score 10 on the Mohs hardness scale — identical to natural diamonds — because they are, chemically and structurally, diamonds. Hardness, thermal conductivity, and optical properties are the same between a lab-grown and a mined stone of the same grade.

The durability question is really a question about the setting, not the stone. A prong setting on a daily-wear ring will show wear over time regardless of whether the centre stone is lab-grown or natural. A bezel setting offers more protection. Our analysis of how lab-grown diamonds hold up under daily wear draws on real user reports and finds no meaningful difference in stone performance between lab-grown and mined diamonds over multi-year wear periods.

What should Indian buyers watch out for when reading global lab-grown diamond data?

The BriteCo index is US-centric, and a few adjustments are needed before applying its conclusions to the Indian market.

The 51% figure is by appraisal count, not by value. As Quora's finance and consumer behaviour contributors have noted, lab-grown diamonds may cross 50% by volume while natural diamonds still hold the larger share by total spending. In India, where the organised diamond jewellery market is still maturing, the volume share of lab-grown is growing fast but has not yet been independently measured with the same rigour as the BriteCo index.

Indian import duties affect the price gap differently. Natural rough diamonds attract a basic customs duty of 5% when imported into India, while lab-grown rough faces a lower duty structure — a deliberate policy choice to support domestic lab-grown manufacturing. This means the natural-vs-lab-grown price gap in India may be structurally wider than in the US, making the case for lab-grown even stronger on pure price grounds.

Certification standards also vary. In the US, GIA and AGS certifications are standard. In India, IGI is the dominant certifying body for lab-grown diamonds. IGI-certified lab-grown diamonds carry a report that explicitly states the growth method (CVD or HPHT), the 4C grades, and any treatments. Buyers should insist on IGI or GIA certification and be cautious of uncertified stones sold at a discount.

Resale infrastructure is thinner in India. The secondary market for lab-grown diamonds in India is nascent. Unlike natural diamonds, which can be sold back to most jewellers or through gold-loan companies, lab-grown diamonds have fewer organised resale channels. This is not a reason to avoid them — it is a reason to buy them as jewellery, not as an investment.

How does the lab-grown diamond trend intersect with broader consumer shifts in India?

The BriteCo data captures a US trend, but the underlying drivers — falling prices, rising quality, ethical sourcing concerns, and the desire for larger stones on a fixed budget — are equally present in India. India's urban middle class, particularly in metros like Bengaluru, Mumbai, Hyderabad, and Delhi, is increasingly comfortable with lab-grown diamonds for engagement rings. Tier-2 cities are following, driven by social media and the visibility of lab-grown options on platforms like Tanishq, CaratLane, and a growing number of direct-to-consumer brands.

The metal preference shift is also relevant. As yellow gold reasserts itself globally, Indian buyers who have been nudged toward white gold or platinum settings by Western-influenced retailers can feel more confident choosing yellow gold — a metal that holds cultural meaning in India and, at current gold prices, also holds intrinsic value in a way that white gold settings never quite did.

For buyers exploring specific styles, our guides to best curved solitaire engagement rings, U-prong and six-prong solitaires, and floral and lily-cut designs cover the full range of what is available in the Indian market in 2026.

What does the BriteCo data project for 2027 and 2028?

The BriteCo index includes projections through 2028, though the specific trajectory numbers were not published in the summary data available. The directional signal is clear: if lab-grown adoption grew from 47% in 2025 to 51% in the first half of 2026, the full-year 2026 figure will likely settle somewhere in the 52–55% range, and 2027–2028 could see lab-grown diamonds approach 60–65% of newly appraised engagement rings by count.

Per-carat prices for lab-grown diamonds are unlikely to recover. The manufacturing cost curve for CVD diamonds has been consistently downward, and no supply constraint is on the horizon that would reverse this. Natural diamond prices face their own pressures — softening demand in China, the ongoing shift of younger buyers toward lab-grown, and the long-term decline of major mining operations. The price gap between lab-grown and natural diamonds has been reported at approximately 73% — meaning a comparable lab-grown diamond costs roughly a quarter of its natural equivalent — and that gap is unlikely to narrow significantly in the near term.

What is the practical takeaway for an Indian buyer in 2026?

The BriteCo data confirms what many Indian buyers have already intuited: lab-grown diamonds are no longer a niche or compromise choice. They are the majority choice, at least by count, in the world's most data-rich engagement ring market. The median buyer in the US in 2026 is choosing a lab-grown stone — and a larger stone than buyers chose seven years ago.

For Indian buyers, the decision framework breaks down along a few clear lines.

If your priority is maximum size and visual impact within a fixed budget, a lab-grown diamond is the rational choice. A budget that buys a 0.5-carat natural diamond will buy a 1.5–2 carat lab-grown stone of comparable colour and clarity grades.

If your priority is long-term resale value or the symbolic weight of a stone formed over geological time, a natural diamond still holds that position — but you are paying a significant premium for it, and the resale market for natural diamonds in India is not as liquid as many buyers assume.

If you are buying for daily wear and want a stone that will perform identically to a natural diamond in every physical sense, a lab-grown diamond is indistinguishable in use. Our durability reporting confirms this.

The metal question is simpler: yellow gold is back, globally and in India, and there is no longer any reason to default to white gold unless that is genuinely your preference.

The BriteCo index will be updated annually, and its charts are publicly available — making it one of the most useful ongoing data sources for tracking where the engagement ring market is heading. For Indian buyers, the direction is clear: lab-grown diamonds are the mainstream, and the market infrastructure — certification, retail, and increasingly resale — is catching up to that reality.