4 carat marquise lab-grown engagement ring price

How much is a 4 carat marquise lab-grown engagement ring?

Short answer: at Lavora Diamonds, a 4 carat marquise lab-grown solitaire (D–E color, VS1+ clarity) in 14K yellow gold is estimated at $3,150–$3,500 complete on our design desk. That covers the IGI-certified center, the setting and your custom 3D render.

By Lavora Diamonds, Provo, Utah. Updated October 2026.

Our design-desk rates are per carat, not per shape, so a marquise prices like any other shape of the same size and grade on the desk; the exact stone you choose sets the final number. Our default center is D–E color with VS1+ clarity, quoted on the exact stone you choose. On our ring price estimator, a 3.0ct D–E/VS1+ solitaire in 14K yellow gold is $2,625–$2,925, a 4.0ct D–E/VS1+ solitaire in 14K yellow gold is $3,150–$3,500, the same 4.0ct in a 14K yellow gold hidden halo is $3,225–$3,775, and a 5.0ct D–E/VS1+ solitaire in 14K yellow gold is $4,475–$4,950. A pavé band, 18K gold or platinum move the number up, and your exact price comes with your 3D render. Complete engagement rings have a $2,000 minimum.

Lavora 4 carat marquise price guide

Build	Price	Source
3.0ct · D–E/VS1+ · 14K yellow · solitaire (desk rates are per carat, not per shape)	$2,625–$2,925	Ring price estimator
4.0ct · D–E/VS1+ · 14K yellow · solitaire (desk rates are per carat, not per shape)	$3,150–$3,500	Ring price estimator
4.0ct · D–E/VS1+ · 14K yellow · hidden halo (desk rates are per carat, not per shape)	$3,225–$3,775	Ring price estimator
5.0ct · D–E/VS1+ · 14K yellow · solitaire (desk rates are per carat, not per shape)	$4,475–$4,950	Ring price estimator
Pavé band, 18K gold or platinum	Raises the price	Quoted on your specs

Estimator figures are ranges, not fixed prices. See our ring price estimator and completed ring prices. Your exact price comes with your 3D render.

How big is a 4 carat marquise?

A marquise is a long, boat-shaped brilliant cut with two points. It spreads its weight along its length, so it faces up much longer than a round of the same carat weight. Measurements below come from IGI-graded lab-grown stones in our supplier feed, October 2026.

Center	Face-up size
4ct marquise	about 15.5–17.1 mm long, 8.1–8.5 mm wide
3ct marquise	about 14.5–15.8 mm long, 7.4–7.7 mm wide
4ct round (for comparison)	about 10.2–10.4 mm across

A 4 carat marquise is several millimeters longer than a 4 carat round is wide. We confirm the exact millimeters on the stone you choose before production, and you check the length on your hand size in your 3D render.

Buying tips

• Clarity: VS1+. At 4 carats the stone is large, and VS1 is our floor.
• Bow-tie: many marquise stones show a darker band across the middle. It is not on the certificate, so ask us to show you the exact stone before production.
• Points: both tips should sit under V-prongs, and a 4 carat center needs a head designed for the stone. We show both in your 3D render.
• Other sizes: see 3 carat marquise prices and 2.5 carat marquise prices.

How a custom ring works at Lavora

1. Text us a photo or idea. We text back a private soft quote, usually in about 12 hours.
2. You see a 3D render first, often within 24–48 hours: $50 refundable, credited to your ring, with unlimited revisions.
3. Delivery takes 4–5 weeks after 3D approval and payment. Need it sooner? Rush 2–3 weeks, $250 (14–21 days).
4. Production begins after 3D approval and payment. Klarna and Affirm financing are available on your invoice.

Every lab-grown center is IGI-certified, VS1+ clarity. Engraving is complimentary, US shipping is free and fully insured, and every ring comes with a Lifetime craftsmanship warranty, plus free resizing within the first 60 days. The warranty covers manufacturing defects. Lavora Diamonds is online-only: you design over text and your ring ships to you. Save 10 percent off your total when you buy the ring and band together.

4 carat marquise questions

How much is a 4 carat marquise lab-grown engagement ring?

At Lavora Diamonds, a 4 carat marquise lab-grown solitaire (D–E color, VS1+ clarity) in 14K yellow gold is estimated at $3,150–$3,500 complete on our design desk, including the IGI-certified center, setting and your custom 3D render. With a hidden halo, the same 4 carat center is $3,225–$3,775 on our ring price estimator.

Does a marquise cost less than a round?

On our design desk, rates are per carat, not per shape, so a 4 carat marquise prices like a 4 carat round of the same grade. The exact stone you choose sets the final number.

Should I buy a 3, 4 or 5 carat marquise?

Price all three. On our ring price estimator, a 3.0ct D–E/VS1+ solitaire in 14K yellow gold is $2,625–$2,925, a 4.0ct is $3,150–$3,500 and a 5.0ct is $4,475–$4,950. Desk rates are per carat, not per shape, so a marquise at each size prices like any other shape of the same grade.

How big is a 4 carat marquise diamond?

Based on IGI-graded lab-grown stones in our supplier feed in October 2026, a 4 carat marquise measures about 15.5–17.1 mm long and 8.1–8.5 mm wide, compared with about 10.2–10.4 mm across for a 4 carat round. We confirm the exact millimeters before production.

Can I get a 4 carat marquise in platinum?

Yes. Platinum and 18K gold are offered and are quoted on your specs; both cost more than the 14K gold in our estimates. We show the metal in your 3D render before production.

How do I pay for a custom 4 carat marquise ring?

Production begins after 3D approval and payment. Klarna and Affirm financing are available on your invoice. Complete engagement rings have a $2,000 minimum.

See also: 3 carat marquise prices · 2.5 carat marquise prices · custom marquise ring cost · 4 carat ring prices · ring price estimator

Lavora Diamonds · online custom jeweler based in Provo, Utah · text (385) 592-7180