3 Carat round lab-grown diamonds

Every 3 carat round lab-grown diamond Facet Wire tracks, sorted by live price.

Facet Wire is tracking 12 live 3 carat round lab-grown listings right now across 2 retailers: With Clarity (8), Frank Darling (4). Prices run from $1,623 to $9,732, with a median of $3,165 ($700 per carat at the median). Data refreshes nightly — last build 2026-10-17.

Cheapest live 3 carat round lab-grown listings

Stone	Retailer	Carat	Color	Clarity	Cert	Price	$/ct
IGI 3.33 Carat F-VS1 Excellent Cut Round Lab-Grown Diamond	With Clarity	3.33	F	VS1	IGI 786647533	$1,623	$487
IGI 3.08 Carat F-VS1 Ideal Cut Round Lab-Grown Diamond	With Clarity	3.08	F	VS1	IGI 831630057	$1,641	$533
IGI 3.57 Carat E-VS1 Ideal Cut Round Lab-Grown Diamond	With Clarity	3.57	E	VS1	IGI 783622535	$1,994	$559
IGI 4.09 Carat F-VVS2 Ideal Cut Round Lab-Grown Diamond	With Clarity	4.09	F	VVS2	IGI 783620264	$2,072	$507
IGI 3.01 Carat F-VVS1 Ideal Cut Round Lab-Grown Diamond	With Clarity	3.01	F	VVS1	IGI 737574535	$2,111	$701
IGI 4.37 Carat E-VVS2 Ideal Cut Round Lab-Grown Diamond	With Clarity	4.37	E	VVS2	IGI 795638173	$2,440	$558
IGI 3.06 Carat F-VVS2 Super Ideal Cut Round Lab-Grown Diamond	Frank Darling	3.06	F	VVS2	IGI 835669194	$3,891	$1,272
IGI 3.05 Carat D-IF Ideal Cut Round Lab-Grown Diamond	With Clarity	3.05	D	IF	IGI 729550908	$4,182	$1,371
IGI 6.51 Carat E-VS1 Ideal Cut Round Lab-Grown Diamond	With Clarity	6.51	E	VS1	IGI 842620133	$4,542	$698
GIA 4.02 Carat D-VVS2 Super Ideal Cut Round Lab-Grown Diamond	Frank Darling	4.02	D	VVS2	GIA 6482736342	$8,546	$2,126
GCAL 3.3 Carat D-FL Super Ideal Cut Round Lab-Grown Diamond	Frank Darling	3.30	D	FL	GCAL 361106008	$8,621	$2,612
GIA 4.07 Carat E-VVS1 Super Ideal Cut Round Lab-Grown Diamond	Frank Darling	4.07	E	VVS1	GIA 3515985712	$9,732	$2,391

Search all 541 tracked listings →

Frequently asked questions

How much does a round lab-grown diamond cost?

Across 12 live listings tracked by Facet Wire, round lab-grown diamonds run from $1,623 to $9,732, with a median price of $3,165 ($700 per carat). The cheapest tracked right now is a 3.33 ct stone at With Clarity for $1,623.

Which retailer is cheapest for round lab-grown diamonds?

It changes nightly — that is the point of Facet Wire. The table on this page is sorted by live price across With Clarity, Frank Darling, and the same certified stone often appears at several retailers with a real price gap.

Are round diamonds good value?

Round stones are priced off live market data here, not list prices. Compare the per-carat column: at the median, round lab-grown diamonds run $700 per carat across our tracked retailers.

How often do these prices update?

Facet Wire re-scrapes its retailers nightly and rebuilds this page from the fresh data, so counts, medians and the cheapest listings reflect the latest run.