How Much People Spend on Lab Grown Diamonds, and What That Buys in 2026

The average lab grown diamond engagement ring costs about USD 4,600 in 2026, at an average centre stone of 1.9 carats. The mined equivalent averages USD 7,600. That gap of roughly USD 3,000 is the single clearest number in the market, drawn from The Knot 2026 Real Weddings Study of 10,474 US couples married in 2025.¹

Widen the lens beyond bridal and the average falls. Across all diamond jewellery, the average item sold for about USD 2,739 in 2025, up more than 10 percent year over year on real point of sale data.² Blend every centre stone type together and the average US engagement ring reached USD 6,504, with lab grown pulling the blended figure down against mined.³

These figures measure different things, and mixing them is the most common error in diamond spend coverage. The USD 4,600 is a lab grown bridal average. The USD 2,739 is every diamond jewellery item, from studs to statement pieces. The USD 6,504 blends lab grown and mined engagement rings into one number. Each is correct for its own base.

The per carat gap is what unlocks the spend behaviour. A 1 carat lab grown diamond averaged USD 1,000 or less at retail in 2025, against roughly USD 4,200 for a 1 carat natural.⁴ Lab grown now costs about 73 percent less than natural on comparable specifications. When the same look costs a quarter as much, the question stops being whether to buy and becomes how much stone the budget now reaches.

No. The three month salary rule was a mid century De Beers marketing line, and buyers have abandoned it. Americans now put about 17 percent of annual income toward a ring, closer to two months than three, and 61 percent call the three month figure unreasonable in this economy.⁵

The gap between what people plan and what they pay is wide. In 2025 the average stated budget was USD 4,000, while the actual mean spend landed at USD 6,423. Two thirds of buyers spent under USD 6,000, and a third spent under USD 3,000.⁵ The distribution matters more than the average: most spend is concentrated well below the headline mean, with a smaller group of larger purchases pulling the average up.

Aspiration still runs ahead of reality. Surveyed buyers name an ideal price near USD 11,000 to USD 13,000, roughly double what they actually spend. The practical read for anyone budgeting is that the real market clears far below the aspirational number, and a considered purchase does not require the salary math at all. For the full case, see our breakdown of why the two month salary rule is dead.

Younger buyers drive lab grown adoption, and they spend it on size. Among Gen Z engagement ring buyers, about two thirds choose lab grown. Millennials split near 50/50 between natural and lab grown. Gen Z and Millennials together are the explicit engine of the shift.⁶

The reallocation to size is the clearest behavioural signal in the data. The average lab grown centre stone grew from 1.31 carats in 2019 to 2.45 carats in 2025, an 87 percent increase in weight and a 57 percent increase in top surface area.⁶ Over the same window, the average engagement ring price fell from about USD 6,000 in 2021 to USD 5,200 in 2024 even as stones grew. Buyers held the budget and moved the saving into carats.

The spend is also less private and more collaborative. Most proposees now have some involvement in selecting the ring, and social platforms shape the research, with TikTok reaching 32 percent of Gen Z buyers for ring education against 13 percent of Millennials.⁷ For a closer look at the size trade, read why buyers chose bigger stones, not the savings.

This section describes what Draco offers, not what it sells. Across 152 active products, the catalogue concentrates in the middle of the market. The median offered piece is CAD 2,475 (about USD 1,800), the mean is CAD 3,216 (about USD 2,350), and 87 percent of pieces list between CAD 1,000 and CAD 5,000.⁸

The middle bands map cleanly onto the public spend data. A buyer at the USD 2,739 all jewellery average or the USD 4,600 lab grown ring average lands inside Draco's dominant CAD 1,000 to CAD 5,000 range. The assortment is built where the market actually clears, not at the aspirational USD 11,000 ideal.

The spend also buys a rejection filter. Draco rejects 12 of every 100 stones inspected before they reach a customer.⁹ Every stone is IGI certified, E to F colour, VS2 clarity and better. Browse the middle of the market directly in the lab diamonds under CAD 2,000 collection.

These figures are the share of pieces Draco offers, its catalogue assortment, not a sales or revenue breakdown. Across 152 active products, the architecture concentrates hard in the middle. 87 percent of pieces list between CAD 1,000 and CAD 5,000, and the single largest band, CAD 1,000 to CAD 2,500, holds 46 percent of the catalogue on its own. The median offered piece is about CAD 2,475.⁸

Read as a distribution, the architecture is deliberate. Draco does not spread evenly across every tier. It stacks the assortment where the public spend data says the market clears, the CAD 1,000 to CAD 5,000 middle, and keeps only a thin tail above CAD 10,000. The share of pieces under CAD 1,000 and the share above CAD 10,000 each sit between 3 and 7 percent, so the catalogue is neither a discount rail nor a high jewellery vitrine. It is a mid market instrument, and these are shares of what Draco offers, never a claim about units sold.

Every band sits behind the same filter. Draco rejects 12 of every 100 stones inspected before they reach a customer, and each stone that clears is IGI certified, E to F colour, VS2 clarity and better.⁹

There is no required number. The salary rules are marketing history, and the real market clears between roughly USD 3,000 and USD 6,000 for most buyers, with a large share under USD 3,000. A defensible plan is to set the budget you are comfortable with, then let the lab grown discount decide how much stone it reaches.

Three principles hold across the data. First, buy for beauty and size, not resale. Lab grown typically recovers 20 to 40 percent of purchase price on resale, so the purchase is for wearing, not investing.¹⁰ Second, spend on cut before carat, because cut governs how much light a stone returns. Third, insist on independent certification so the price is anchored to a verifiable grade, not an adjective. For a starting budget, our lab grown diamond engagement ring cost guide maps carats to price at each tier.

This report combines two tiers of data. Each is labelled for what it is, and they are never merged into a single claim.

What this report does not claim: any Draco sales total, any order level average as a market benchmark, or any carat trend from Draco orders. Those order level samples are too thin to publish. Public spend data and catalogue assortment are the only figures presented as fact.