Under 1 Carat round lab-grown diamonds

Every under 1 carat round lab-grown diamond Facet Wire tracks, sorted by live price.

Facet Wire is tracking 9 live under 1 carat round lab-grown listings right now across 3 retailers: MiaDonna (7), Frank Darling (1), VRAI (1). Prices run from $231 to $610, with a median of $238 ($722 per carat at the median). Data refreshes nightly — last build 2026-10-18.

Most popular / better value

Across these 9 listings, the most common color is D (7 stones), the most common clarity is VS1 (4 stones).

Cheapest live under 1 carat round lab-grown listings

Stone	Retailer	Carat	Color	Clarity	Cert	Price	$/ct
0.32 Carat Round Shaped, Ideal Cut, D Color, VVS2 Clarity, IGI Certified Lab Grown Diamond	MiaDonna	0.32	D	VVS2	IGI 779652599	$231	$722
0.32 Carat Round Shaped, Ideal Cut, D Color, VS1 Clarity, IGI Certified Lab Grown Diamond	MiaDonna	0.32	D	VS1	IGI 779652610	$231	$722
0.32 Carat Round Shaped, Ideal Cut, D Color, VVS2 Clarity, IGI Certified Lab Grown Diamond	MiaDonna	0.32	D	VVS2	IGI 773630549	$231	$722
0.33 Carat Round Shaped, Ideal Cut, D Color, VVS2 Clarity, IGI Certified Lab Grown Diamond	MiaDonna	0.33	D	VVS2	IGI 779652576	$238	$721
0.33 Carat Round Shaped, Ideal Cut, D Color, VS1 Clarity, IGI Certified Lab Grown Diamond	MiaDonna	0.33	D	VS1	IGI 781604472	$238	$721
0.33 Carat Round Shaped, Ideal Cut, D Color, VS1 Clarity, IGI Certified Lab Grown Diamond	MiaDonna	0.33	D	VS1	IGI 779633186	$238	$721
0.43 Carat Round Shaped, Ideal Cut, D Color, VS2 Clarity, IGI Certified Lab Grown Diamond	MiaDonna	0.43	D	VS2	IGI 785617438	$310	$721
IGI 0.53 Carat E-VS1 Very Good Cut Round Lab-Grown Diamond	Frank Darling	0.53	E	VS1	IGI 828661219	$509	$960
0.68 ct Round	VRAI	0.68	G	VS2	—	$610	$897

Search all 1997 tracked listings →

Frequently asked questions

How much does a round lab-grown diamond cost?

Across 9 live listings tracked by Facet Wire, round lab-grown diamonds run from $231 to $610, with a median price of $238 ($722 per carat). The cheapest tracked right now is a 0.32 ct stone at MiaDonna for $231.

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 MiaDonna, Frank Darling, VRAI, 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 $722 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.