Lab Grown Diamond Price Comparison

RINGS.COM RESEARCH & DATA

Rings.com Research

Lab Grown Diamond Price Comparison

As of October 2026, median lab grown diamond prices across 6 US retailers (5 with third-party certificates, plus VRAI, which grades in-house) are $480 at 1 carat, $680 at 1.5 carats and $1,160 at 2 carats, from 181,292 public listings.

Source: the Rings.com Lab-Grown Diamond Price Index. Methodology and monthly benchmark: Lab Grown Diamond Price Per Carat.

How the Price Index is calculated · Which retailers are included and why · About this page's data

Data as of October 2026, captured October 24, 2026, published October 25, 2026. Updated monthly, next update November 2026. USD.

$4801 carat median
$6801.5 carat median
$1,1602 carat median
181,292public listings, 6 retailers

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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 across 6 US retailers (5 with third-party certificates, plus VRAI, which grades in-house), from 49,491 public listings.
  • As of October 2026, the median 1.5 carat lab grown diamond listed for $680 across 6 US retailers (5 with third-party certificates, plus VRAI, which grades in-house), from 74,711 public listings.
  • As of October 2026, the median 2 carat lab grown diamond listed for $1,160 across 5 US retailers, from 57,090 public listings.
  • In October 2026, among retailers with third-party certificates, the lowest 1 carat retailer median was $311 at Ritani and the highest was $1,010 at Brilliant Earth, a 3.2x spread.
  • The October 2026 comparison pools 181,292 public listings from 6 US retailers (5 with third-party certificates, plus VRAI, which grades in-house), captured October 24, 2026.

Median listed prices for lab grown diamonds compared across 6 US retailers, October 2026: 181,292 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 (October 2026)

Retailer 1 ct median 1.5 ct median 2 ct median
Blue Nile $689 (n=4,165) $1,570 (n=3,734) $2,472 (n=4,221)
Brilliant Earth $1,010 (n=11,220) $1,590 (n=13,081) $2,780 (n=12,787)
Clean Origin $478 (n=436) $575 (n=3,526) $875 (n=1,739)
Grown Brilliance $540 (n=12,938) $775 (n=23,049) $1,330 (n=14,671)
Ritani $311 (n=20,697) $426 (n=31,224) $675 (n=23,672)
VRAI † $1,600 (n=35) $1,830 (n=97) —

"—" 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.

Same certified stone, different prices (October 2026)

Each stone below is one specific diamond, identified by its IGI certificate number, listed at more than one tracked retailer on October 24, 2026. These are the largest dollar gaps among stones with a page on this site in each of four groups (about 1.5 or 2 carats, round or oval), among stones whose retailer-assigned cut (Ideal and Super Ideal grouped with Excellent for this comparison), polish and symmetry grades do not conflict. Brilliant Earth is the higher-priced retailer on all 4 of these stones. These are listed prices on selected stones, not a ranking of retailers. All 4 are D color, 3 IF and 1 VVS1, among the highest grades. At every retailer shown, each stone's price is above that retailer's own median for the weight in the table above, which covers all colors and clarities.

1.55 carat round, D IF · IGI 759508965

Grown Brilliance $1,550 · Brilliant Earth $4,510

Gap: $2,960 (191%) between Brilliant Earth and Grown Brilliance

1.58 carat oval, D IF · IGI 704585150

Grown Brilliance $1,515 · Brilliant Earth $5,050

Gap: $3,535 (233%) between Brilliant Earth and Grown Brilliance

2.09 carat round, D IF · IGI 692560288

Grown Brilliance $2,505 · Brilliant Earth $7,110

Gap: $4,605 (184%) between Brilliant Earth and Grown Brilliance

2.02 carat oval, D VVS1 · IGI 768628540

Grown Brilliance $2,120 · Brilliant Earth $4,780

Gap: $2,660 (125%) between Brilliant Earth and Grown Brilliance

These stones were picked because retailers priced them very differently, so the gaps are not typical of all lab grown diamonds. For the 2.09 carat round, 11 certificates show the same two prices; we show one. Across the 310 IGI-certified stones that are listed at two or more tracked retailers and have a page here (a set that is not a random sample of lab grown diamonds), the median gap between the highest and lowest listed price is $3,350. Listed prices as of October 24, 2026, not quotes; these stones may have sold or been repriced since, and retailers differ in service, return terms and delivery, which these figures do not capture. Loose stones only. This is not a recommendation of any retailer. Rings.com receives no compensation from the retailers included for inclusion or ranking.

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Per-carat detail pages

By shape and carat

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.

Updated monthly.

Rings.com Lab-Grown Diamond Price Index