Lab Grown Diamond Price Comparison
Rings.com Research
Lab Grown Diamond Price Comparison
As of September 2026, median lab grown diamond prices across 6 US retailers (5 with third-party certificates, plus VRAI, which grades in-house) are $510 at 1 carat, $760 at 1.5 carats and $1,295 at 2 carats, from 190,184 public listings.
Source: the Rings.com Lab-Grown Diamond Price Index. Methodology and monthly benchmark: Lab Grown Diamond Price Per Carat.
Data as of September 2026, captured September 17, 2026. Updated monthly, next update October 2026. USD.
Key figures in words, September 2026 (for quoting)
- As of September 2026, the median 1 carat lab grown diamond listed for $510 across 6 US retailers (5 with third-party certificates, plus VRAI, which grades in-house), from 53,706 public listings.
- As of September 2026, the median 1.5 carat lab grown diamond listed for $760 across 6 US retailers (5 with third-party certificates, plus VRAI, which grades in-house), from 81,186 public listings.
- As of September 2026, the median 2 carat lab grown diamond listed for $1,295 across 5 US retailers, from 55,292 public listings.
- In September 2026, among retailers with third-party certificates, the lowest 1 carat retailer median was $307 at Ritani and the highest was $960 at Brilliant Earth, a 3.1x spread.
- The September 2026 comparison pools 190,184 public listings from 6 US retailers (5 with third-party certificates, plus VRAI, which grades in-house), captured September 17, 2026.
Median listed prices for lab grown diamonds compared across 6 US retailers, September 2026: 190,184 public listings, round and oval, all colors and clarities pooled, refreshed monthly. Carat bands: 0.91 to 1.09 ct (1 carat), 1.41 to 1.59 ct (1.5 carat), 1.91 to 2.09 ct (2 carat).
Median price by retailer and carat (September 2026)
| Retailer | 1 ct median | 1.5 ct median | 2 ct median |
|---|---|---|---|
| Blue Nile | $689 (n=4,507) | $1,487 (n=4,563) | $2,438 (n=4,908) |
| Brilliant Earth | $960 (n=10,081) | $1,610 (n=11,905) | $2,640 (n=11,487) |
| Clean Origin | $349 (n=1,682) | $428 (n=7,110) | $656 (n=3,791) |
| Grown Brilliance | $590 (n=15,365) | $1,065 (n=25,035) | $1,585 (n=12,697) |
| Ritani | $307 (n=22,032) | $431 (n=32,482) | $646 (n=22,409) |
| VRAI † | $1,640 (n=39) | $1,810 (n=91) | — |
"—" means the retailer had fewer than 30 qualifying listings in that carat range this cycle; no figure is published for it. † VRAI grades in-house (no third-party certificates); its figures are context, not directly comparable.
Per-carat detail pages
- 1 carat lab grown diamond price
- 1.5 carat lab grown diamond price
- 2 carat lab grown diamond price
- How much does a lab grown diamond cost?
- Lab grown diamond resale value
By shape and carat
- 1 carat round lab grown diamond price
- 1.5 carat round lab grown diamond price
- 1.75 carat round lab grown diamond price
- 2 carat round lab grown diamond price
- 2.25 carat round lab grown diamond price
- 2.5 carat round lab grown diamond price
- 1 carat oval lab grown diamond price
- 1.25 carat oval lab grown diamond price
- 1.5 carat oval lab grown diamond price
- 2 carat oval lab grown diamond price
- 2.25 carat oval lab grown diamond price
- 2.5 carat oval lab grown diamond price
Stat definition. Figures on this page pool all qualifying listings in the stated carat range: all colors, clarities, and cut grades, from retailers with at least 30 qualifying listings. The monthly Index benchmark is a different, tighter statistic (E VS1 round Excellent-cut IGI). The two are not comparable and should not be quoted against each other.
Loose stones only. Every figure on this page is for a loose lab grown diamond as listed, before any ring setting. No blended ring-total pricing appears on this page; setting costs vary by retailer and are never merged into these comparisons.
How current are these prices?
Every price on this page was captured from public retailer listings on September 17, 2026 (September 2026 collection cycle) and is accurate as of that date only. Retailers reprice and delist stones continuously, so any listing shown here may have sold, been delisted, or changed price since capture.
- Blue Nile: last verified in its public listings on September 17, 2026. Re-checked on the index's collection cycle (currently monthly; weekly refresh rolling out).
- Brilliant Earth: last verified in its public listings on September 17, 2026. Re-checked on the index's collection cycle (currently monthly; weekly refresh rolling out).
- Clean Origin: last verified in its public listings on September 17, 2026. Re-checked on the index's collection cycle (currently monthly; weekly refresh rolling out).
- Grown Brilliance: last verified in its public listings on September 17, 2026. Re-checked on the index's collection cycle (currently monthly; weekly refresh rolling out).
- Ritani: last verified in its public listings on September 17, 2026. Re-checked on the index's collection cycle (currently monthly; weekly refresh rolling out).
- VRAI: last verified in its public listings on September 17, 2026. Re-checked on the index's collection cycle (currently monthly; weekly refresh rolling out).
About this data
Prices are publicly listed retail prices for loose lab grown diamonds, collected from each retailer's public website on September 17, 2026. No accounts, logins, or paywalls are involved; these are the prices any shopper sees. Rings.com is an independent research publisher, not a jewelry retailer, and publishes this data as an attributed, dated record of public listing prices. Retailer names are used for identification only; Rings.com is not affiliated with any retailer listed.
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Rings.com Lab-Grown Diamond Price Index