Are Engagement Rings Getting Bigger? Carat Size Trends for 2026
Posted by SEGAL JEWELRY
Industry trend data with a note from Segal Jewelry's own orders. Last updated: June 2026.
Yes — engagement ring center stones are getting bigger, and lab-grown diamonds are the reason. Industry reports show the average lab-grown center diamond grew from about 1.31 carats in 2019 to roughly 2.45 carats in 2025, while lab-grown stones now sit in the majority of new engagement rings. Because lab-grown costs far less per carat, couples are putting the same budget toward a larger stone.
The trend: carat sizes are climbing
Engagement ring stones have grown steadily, but the averages split sharply by stone type:
| Stone type | Typical center-stone carat (industry) |
|---|---|
| Lab-grown diamond | ~2.0–2.45 ct |
| Natural diamond | ~1.16 ct |
| Blended market average | ~1.9 ct |
The shift is driven almost entirely by lab-grown adoption: industry reports put lab-grown at roughly 61% of engagement-ring center stones, and the average lab-grown center diamond nearly doubled in carat weight from 2019 to 2025. (Figures are third-party industry estimates — see sources.)
Why stones are getting bigger
It comes down to price per carat. A 1-carat lab-grown diamond now averages around $1,000 or less, versus roughly $4,200 for a comparable 1-carat natural diamond. When the stone costs a fraction as much, couples redirect the savings into a larger center stone, a more elaborate setting, or a bolder design — for the same overall budget.
This is the single biggest change in the engagement-ring market in a decade, and it's why "going bigger" no longer means "spending more."
What we see at Segal
The pattern holds in our own custom engagement-ring orders: the median center stone is about 2 carats, and buyers who choose lab-grown diamond trend noticeably larger than those who choose natural diamond — the same behavior driving the national shift. When the stone costs less per carat, people size up.
What this means if you're shopping in 2026
- Want a bigger look for the same budget? Choose lab-grown diamond or moissanite — that's how most buyers now reach 2 carats and beyond.
- Want rarity and long-term value? Natural diamond, typically around 1 carat, remains the classic choice.
- Want color and durability for less? Ruby or sapphire reads beautifully at 1–1.5 ct and costs less than a comparable diamond.
Frequently asked questions
Are engagement rings getting bigger? Yes. Industry data shows the average lab-grown center diamond grew from about 1.31 ct (2019) to roughly 2.45 ct (2025), pulling the overall market average up. Lab-grown's lower price per carat lets couples choose larger stones for the same budget.
What is the average engagement ring carat size in 2026? Roughly 1.9 ct blended across all rings, but it splits by stone: lab-grown averages about 2.0–2.45 ct while natural diamond averages about 1.16 ct.
Why are lab-grown diamond rings bigger on average? A 1-carat lab-grown diamond averages around $1,000 versus about $4,200 for natural, so buyers put the savings toward a larger stone. We see the same pattern at Segal: lab-grown buyers trend toward larger center stones than natural-diamond buyers.
Is bigger always better? Not necessarily. Cut quality, setting, and stone type affect how large a ring looks far more than carat weight alone — and colored stones like ruby and sapphire make a striking statement at 1–1.5 ct.
Methodology: Industry figures are third-party estimates from published 2025–2026 engagement-ring reports (see sources). The Segal reference reflects our custom engagement-ring orders over the trailing 12 months and is directional.
Sources: Masina Diamonds (2026 average carat size); Diamond at Work (2025–2026 size trends); BriteCo (lab-grown vs. natural diamond report).
Segal Jewelry handcrafts custom engagement rings in moissanite, lab-grown diamond, and natural diamond — any design, in carat sizes from about 0.5 ct to 4 ct+. Explore engagement rings.
