Under 1 Carat marquise lab-grown diamonds

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

Facet Wire is tracking 60 live under 1 carat marquise lab-grown listings right now across 1 retailers: Blue Nile (60). Prices run from $468 to $634, with a median of $594 ($740 per carat at the median). Data refreshes nightly — last build 2026-10-17.

Cheapest live under 1 carat marquise lab-grown listings

Stone	Retailer	Carat	Color	Clarity	Cert	Price	$/ct
0.73 Carat E-VVS2 Excellent Cut Marquise Lab-Grown Diamond	Blue Nile	0.73	E	VVS2	—	$468	$641
0.74 Carat D-VVS2 Good Cut Marquise Lab-Grown Diamond	Blue Nile	0.74	D	VVS2	—	$485	$655
0.7 Carat D-VVS2 Very Good Cut Marquise Lab-Grown Diamond	Blue Nile	0.70	D	VVS2	—	$489	$699
0.71 Carat D-VVS2 Very Good Cut Marquise Lab-Grown Diamond	Blue Nile	0.71	D	VVS2	—	$495	$697
0.71 Carat D-VVS2 Very Good Cut Marquise Lab-Grown Diamond	Blue Nile	0.71	D	VVS2	—	$495	$697
0.71 Carat D-VVS2 Excellent Cut Marquise Lab-Grown Diamond	Blue Nile	0.71	D	VVS2	—	$495	$697
0.71 Carat D-VVS2 Excellent Cut Marquise Lab-Grown Diamond	Blue Nile	0.71	D	VVS2	—	$495	$697
0.72 Carat D-VVS2 Excellent Cut Marquise Lab-Grown Diamond	Blue Nile	0.72	D	VVS2	—	$498	$692
0.72 Carat D-VVS2 Excellent Cut Marquise Lab-Grown Diamond	Blue Nile	0.72	D	VVS2	—	$498	$692
0.77 Carat D-VS1 Excellent Cut Marquise Lab-Grown Diamond	Blue Nile	0.77	D	VS1	—	$506	$657
0.77 Carat D-VS1 Excellent Cut Marquise Lab-Grown Diamond	Blue Nile	0.77	D	VS1	—	$506	$657
0.74 Carat D-VVS2 Very Good Cut Marquise Lab-Grown Diamond	Blue Nile	0.74	D	VVS2	—	$509	$688

Search all 541 tracked listings →

Frequently asked questions

How much does a marquise lab-grown diamond cost?

Across 60 live listings tracked by Facet Wire, marquise lab-grown diamonds run from $468 to $634, with a median price of $594 ($740 per carat). The cheapest tracked right now is a 0.73 ct stone at Blue Nile for $468.

Which retailer is cheapest for marquise lab-grown diamonds?

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

Are marquise diamonds good value?

Marquise stones are priced off live market data here, not list prices. Compare the per-carat column: at the median, marquise lab-grown diamonds run $740 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.