How Much Does a Lab Grown Diamond Cost?
Rings.com Research
How Much Does a Lab Grown Diamond Cost?
As of October 2026, a lab grown diamond lists at a median of $480 at 1 carat, $680 at 1.5 carats and $1,160 at 2 carats across 6 US retailers (5 with third-party certificates, plus VRAI, which grades in-house), from 181,292 public listings.
Source: the Rings.com Lab-Grown Diamond Price Index. Methodology and monthly benchmark: Lab Grown Diamond Price Per Carat.
Data as of October 2026, captured October 24, 2026, published October 25, 2026. Updated monthly, next update November 2026. USD.
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Key figures in words, October 2026 (for quoting)
- As of October 2026, the median 1 carat lab grown diamond listed for $480 ($460 per carat) from 49,491 public listings.
- As of October 2026, the median 1.5 carat lab grown diamond listed for $680 ($448 per carat) from 74,711 public listings.
- As of October 2026, the median 2 carat lab grown diamond listed for $1,160 ($566 per carat) from 57,090 public listings.
- In October 2026, the middle 80% of 1 carat lab grown diamond listings ran from $287 to $1,270; color, clarity and cut grade drive the difference.
- The October 2026 figures pool 181,292 public listings from 6 US retailers (5 with third-party certificates, plus VRAI, which grades in-house), captured October 24, 2026.
As of October 2026, based on 181,292 public listings across 6 US retailers (round and oval; carat bands 0.91 to 1.09 ct, 1.41 to 1.59 ct, 1.91 to 2.09 ct):
| Size | Median listed price | Typical range (10th–90th pct) | Median per carat | Listings (n) |
|---|---|---|---|---|
| 1 carat | $480 | $287 to $1,270 | $460 | 49,491 |
| 1.5 carat | $680 | $405 to $1,680 | $448 | 74,711 |
| 2 carat | $1,160 | $617 to $3,380 | $566 | 57,090 |
How much does a 1 carat lab grown diamond cost?
The median 1 carat lab grown diamond (0.91 to 1.09 ct) listed for $480 in October 2026. Most listings fall between $287 and $1,270; color, clarity, and cut grade drive the difference.
How much does a 1.5 carat lab grown diamond cost?
The median 1.5 carat lab grown diamond (1.41 to 1.59 ct) listed for $680 in October 2026, with most listings between $405 and $1,680.
How much does a 2 carat lab grown diamond cost?
The median 2 carat lab grown diamond (1.91 to 2.09 ct) listed for $1,160 in October 2026, with most listings between $617 and $3,380. Price per carat rises with size: $566/ct at 2 carats vs $460/ct at 1 carat.
What moves the price?
Within a size, listed prices vary severalfold with color, clarity, and cut grade, and the same certified stone is often listed at different prices by different retailers. Per-carat pages with retailer-level medians: see the price comparison hub.
Certified stones at these sizes
Stones we track across retailers that have a page here, with the price range across retailers. The stones we track across retailers are not a random sample: they lean toward stones that retailers price very differently.
Around 1.5 carat
5 of the 123 stones we track at this size that have a page here, the nearest to the 1.5 carat median. All 5 are D color with IF clarity. Their median listed prices are about 2.0 times the page median, so they sit well above this page's median of $680, which pools all grades.
- 1.42 carat oval, D IF · IGI 743593548
Listed at 3 tracked retailers: $449 to $2,790 - 1.43 carat oval, D IF · IGI 754563688
Listed at 3 tracked retailers: $628 to $2,800 - 1.43 carat oval, D IF · IGI 754595594
Listed at 3 tracked retailers: $630 to $3,780 - 1.44 carat oval, D IF · IGI 743593527
Listed at 3 tracked retailers: $447 to $2,820 - 1.45 carat oval, D IF · IGI 743594066
Listed at 3 tracked retailers: $450 to $2,840
Around 2 carat
5 of the 190 stones we track at this size that have a page here, the nearest to the 2 carat median. All 5 are D color with VS1 clarity. Their median listed prices are 1.1 to 1.2 times the page median, so they sit above this page's median of $1,160, which pools all grades.
- 1.97 carat oval, D VS1 · IGI 735519594
Listed at 3 tracked retailers: $705 to $2,850 - 1.97 carat oval, D VS1 · IGI 766603409
Listed at 3 tracked retailers: $698 to $2,850 - 1.97 carat oval, D VS1 · IGI 735509071
Listed at 3 tracked retailers: $698 to $2,850 - 1.97 carat oval, D VS1 · IGI 739598657
Listed at 3 tracked retailers: $698 to $2,850 - 1.97 carat oval, D VS1 · IGI 753511607
Listed at 3 tracked retailers: $698 to $2,850
Listed prices as of October 24, 2026, not quotes; a stone may have sold or been repriced since. Loose stones only. This is not a recommendation of any retailer.
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 October 24, 2026 (October 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 October 24, 2026. Re-checked on the index's collection cycle (currently monthly; weekly refresh rolling out).
- Brilliant Earth: last verified in its public listings on October 24, 2026. Re-checked on the index's collection cycle (currently monthly; weekly refresh rolling out).
- Clean Origin: last verified in its public listings on October 24, 2026. Re-checked on the index's collection cycle (currently monthly; weekly refresh rolling out).
- Grown Brilliance: last verified in its public listings on October 24, 2026. Re-checked on the index's collection cycle (currently monthly; weekly refresh rolling out).
- Ritani: last verified in its public listings on October 24, 2026. Re-checked on the index's collection cycle (currently monthly; weekly refresh rolling out).
- VRAI: last verified in its public listings on October 24, 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 October 24, 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.
More lab grown diamond price data
Updated monthly.
Rings.com Lab-Grown Diamond Price Index