How Much Does a Lab Grown Diamond Cost?

RINGS.COM RESEARCH & DATA

Rings.com Research

How Much Does a Lab Grown Diamond Cost?

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

Data: July 2026 collection cycle · Captured July 23, 2026 · USD

As of July 2026, based on 206,316 public listings across 6 US retailers (round and oval, 0.90 to 2.50 ct):

Size Median listed price Typical range (10th–90th pct) Median per carat Listings (n)
1 carat $360 $290 to $1,320 $351 43,326
1.5 carat $471 $385 to $2,170 $304 61,322
2 carat $825 $530 to $3,796 $408 53,215

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 $360 in July 2026. Most listings fall between $290 and $1,320; color, clarity, and cut grade drive the difference.

How much does a 2 carat lab grown diamond cost?

The median 2 carat lab grown diamond listed for $825 in July 2026, with most listings between $530 and $3,796. Price per carat rises with size: $408/ct at 2 carats vs $351/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.

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 July 23, 2026 (July 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 July 23, 2026. Re-checked on the index's collection cycle (currently monthly; weekly refresh rolling out).
  • Brilliant Earth: last verified in its public listings on July 23, 2026. Re-checked on the index's collection cycle (currently monthly; weekly refresh rolling out).
  • Clean Origin: last verified in its public listings on July 23, 2026. Re-checked on the index's collection cycle (currently monthly; weekly refresh rolling out).
  • Grown Brilliance: last verified in its public listings on July 23, 2026. Re-checked on the index's collection cycle (currently monthly; weekly refresh rolling out).
  • Ritani: last verified in its public listings on July 23, 2026. Re-checked on the index's collection cycle (currently monthly; weekly refresh rolling out).
  • VRAI: last verified in its public listings on July 23, 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 July 23, 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