1.5 Carat round lab-grown diamonds

Every 1.5 carat round lab-grown diamond Facet Wire tracks, sorted by live price.

Facet Wire is tracking 25 live 1.5 carat round lab-grown listings right now across 3 retailers: Ada Diamonds (17), With Clarity (4), Frank Darling (4). Prices run from $755 to $3,150, with a median of $2,100 ($1,243 per carat at the median). Data refreshes nightly — last build 2026-10-17.

Cheapest live 1.5 carat round lab-grown listings

Stone	Retailer	Carat	Color	Clarity	Cert	Price	$/ct
IGI 1.51 Carat F-VS1 Excellent Cut Round Lab-Grown Diamond	With Clarity	1.51	F	VS1	IGI 840611154	$755	$500
IGI 1.85 Carat G-SI2 Super Ideal Cut Round Lab-Grown Diamond	Frank Darling	1.85	G	SI2	IGI LG582386137	$755	$408
IGI 1.91 Carat H-VS2 Super Ideal Cut Round Lab-Grown Diamond	Frank Darling	1.91	H	VS2	IGI LG593382405	$756	$396
IGI 1.57 Carat D-VS1 Excellent Cut Round Lab-Grown Diamond	With Clarity	1.57	D	VS1	IGI 786625019	$810	$516
IGI 1.89 Carat E-VS1 Excellent Cut Round Lab-Grown Diamond	With Clarity	1.89	E	VS1	IGI 773650442	$872	$461
IGI 1.5 Carat E-VS1 Ideal Cut Round Lab-Grown Diamond	With Clarity	1.50	E	VS1	IGI 768646873	$1,019	$679
GCAL 1.6 Carat G-VS2 Round Lab-Grown Diamond	Ada Diamonds	1.60	G	VS2	GCAL LG322161138	$1,325	$828
GIA 1.65 Carat G-VS1 Round Lab-Grown Diamond	Ada Diamonds	1.65	G	VS1	GIA LG6227265638	$1,500	$909
GCAL 1.89 Carat G-VS2 Round Lab-Grown Diamond	Ada Diamonds	1.89	G	VS2	GCAL LG321882726	$1,550	$820
GIA 1.89 Carat G-VS1 Round Lab-Grown Diamond	Ada Diamonds	1.89	G	VS1	GIA LG7428164533	$1,725	$913
GCAL 1.81 Carat F-VS2 Round Lab-Grown Diamond	Ada Diamonds	1.81	F	VS2	GCAL LG310761275	$1,850	$1,022
GIA 1.54 Carat D-VS2 Round Lab-Grown Diamond	Ada Diamonds	1.54	D	VS2	GIA LG6362705636	$2,000	$1,299

Search all 541 tracked listings →

Frequently asked questions

How much does a round lab-grown diamond cost?

Across 25 live listings tracked by Facet Wire, round lab-grown diamonds run from $755 to $3,150, with a median price of $2,100 ($1,243 per carat). The cheapest tracked right now is a 1.51 ct stone at With Clarity for $755.

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 Ada Diamonds, 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 $1,243 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.