Lab Grown Diamond Prices, April 2026 Edition (Reconstructed) – Rings.com

Reconstructed edition, not an archived one. April 2026 was the inaugural edition, published before this page format existed (the original deliverable was a data file and a methodology note, not a page). This page is built from that edition’s actual price data, published on 2026-04-28 (every number here is real and sourced), using the CURRENT page template -- so the structure and wording reflect today’s site, not what April actually looked like. The May-August editions linked below are byte-faithful copies of what was truly live that month; this one is not. See the current edition.
Rings.com Research & Data

Rings.com Research

Lab Grown Diamond Price Per Carat

As of April 2026, published 1ct E VS1 IGI retailer medians run from $401 to $910 across eight U.S. retailers (476,988 listings).

Data as of April 2026, collected April 22-23, 2026. Updated monthly. Next edition: May 2026.

Published April 28, 2026  ·  E VS1 Round Excellent IGI  ·  USD  ·  The Rings.com Lab-Grown Diamond Price Index

$640Market Median, 1ct E VS1 IGI (also 1.5ct $1,178, 2ct $1,658)
$401 to $9101ct retailer medians, 6 published
$828 to $3,2882ct retailer medians, 7 published
476,988listings, eight retailers, April 22-23, 2026

At 1ct, prices range from $401 to $910 depending on where you buy. At 2ct, the gap widens to $828 to $3,288. Same certification. Same grade. Different retailer.

Retailer 1ct 1.5ct 2ct
Ritani * $401 $621 $828
Clean Origin — $675 $932
Grown Brilliance $610 $1,200 $1,658
With Clarity $631 $1,049 $1,382
James Allen $648 $1,178 $1,882
Blue Nile $711 $1,296 $2,068
Brilliant Earth $910 $1,820 $3,288
VRAI (non-IGI) $1,198 $1,023 $1,480
Market Median (IGI retailers) $640 $1,178 $1,658

Total stone price. E VS1 Round Excellent IGI. Median. All prices USD. VRAI: proprietary Diamond Foundry grading, not matched to E VS1 IGI specification. * Largest month-over-month move. See Key Findings. † VRAI's 1.5ct cell covers a 1.6–1.9ct window (median actual weight 1.72ct, not 1.5ct) and is not directly comparable to the other retailers in that column; see the VRAI methodology note. A dash (—) means fewer than 30 qualifying listings; in the Market Median row it means the median is not published this edition (the 1ct panel changed too much from June to blend meaningfully; see Key Findings and the Market Median methodology note).

Key Findings: April 2026

Eight retailers. 476,988 listings. E VS1 Round Excellent IGI.

If you're shopping for a 1ct E VS1 IGI round, prices range from $401 to $910 depending on where you buy. That gap is not a quality difference. It's a retailer difference.
At 2ct, the gap widens to $828 to $3,288.

Methodology

Scope.
This index tracks listed retail prices (not transaction prices) across major U.S. online lab-grown diamond retailers. The April 2026 edition analyzed 476,988 lab-grown diamond listings across eight retailers.
Benchmark specification.
E color, VS1 clarity, round brilliant, Excellent cut, IGI-certified. Three weight cells: 1ct (0.95-1.05ct), 1.5ct (1.45-1.55ct), and 2ct (1.95-2.05ct).
Statistical method.
Each published figure is the median total stone price across all qualifying listings within that cell. A minimum of 30 qualifying listings is required for publication. Clean Origin 1ct (n=9) falls below the threshold and is not published.

Retailer selection. Retailers in this index are selected by our research process and are never added by request, payment, or partnership. The full criteria and observation process are public: how retailers are selected for this index.

Previous editions

Each edition is a frozen snapshot: the figures shown there do not change after publication.