3 carat marquise lab-grown engagement ring price

How much is a 3 carat marquise lab-grown engagement ring?

Short answer: at Lavora Diamonds, a 3 carat marquise lab-grown solitaire (F color, VS1 clarity) in 14K yellow gold is estimated at $2,175–$2,550 complete, and $2,625–$2,925 in E–F color and VVS2 clarity, 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. A 3.0ct E–F/VVS2 hidden halo in 14K yellow gold is $2,900–$3,225 on our ring price estimator. 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 marquise price guide

Build	Price	Source
3ct marquise · F/VS1 · 14K yellow · solitaire	$2,175–$2,550	Design-desk estimate (same 3.0ct F/VS1 row as pear and radiant on our ring price estimator)
3ct solitaire · E–F/VVS2 · 14K (any shape)	$2,625–$2,925	Design-desk estimate
3.0ct elongated cushion · E–F/VVS2 · 14K yellow · hidden halo (for scale)	$2,900–$3,225	Ring price estimator
2.0ct marquise · E–F/VVS2 · 14K yellow · solitaire	$2,175–$2,425	Ring price estimator
2.5ct marquise · F/VS1 · 14K yellow · hidden halo	$2,000–$2,300	Ring price estimator
2.00ct (approx.) marquise · 14K yellow · bezel solitaire	$2,149 complete	Completed build
4ct solitaire · E–F/VVS2 · 14K (any shape)	$3,150–$3,500	Design-desk estimate
Hidden halo, pavé band, 18K gold or platinum	Raises the price	Quoted on your specs

Estimator and design-desk figures are ranges, not fixed prices; the completed build is a past Lavora ring, and its carat is approximate. See our ring price estimator and completed ring prices. Your exact price comes with your 3D render.

How big is a 3 carat marquise?

A marquise is a long, narrow brilliant cut with a point at each end. It spreads its weight along its length, so it faces up larger 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
3ct marquise	about 14.5–15.8 mm long, 7.4–7.7 mm wide
2ct marquise	about 12.7–13.9 mm long, 6.4–6.7 mm wide
4ct marquise	about 15.5–17.1 mm long, 8.1–8.5 mm wide
3ct round (for comparison)	about 9.2–9.4 mm across

A 3 carat marquise is roughly 5 to 6.5 mm longer than a 3 carat round is wide. Compare millimeters, not just carats, and check the length on your 3D render.

Buying tips for a 3 carat marquise

• Clarity: VS1+. Marquise faceting hides small inclusions well, and VS1 is our floor.
• Ratio: most 3 carat marquise stones in our supplier feed run about 1.90 to 2.15 length-to-width. Lower reads fuller, higher reads slimmer; pick the outline you want on your 3D render.
• Symmetry: the two points must line up on the same axis, or the stone looks crooked once it is set.
• The points: both tips are the vulnerable spots, so they should sit under V-prongs or a bezel. We show the tips in your 3D render.
• Bow-tie: many marquise stones show a darker bow-tie across the middle. It is not on the certificate, so ask us to check it on your stone before production.

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, and a $250 rush takes 2–3 weeks (14–21 days).
4. 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. With no retail store overhead, our prices sit well under retail. Save 10 percent off your total when you buy the ring and band together.

3 carat marquise questions

How much is a 3 carat marquise lab-grown engagement ring?

At Lavora Diamonds, a 3 carat marquise lab-grown solitaire (F color, VS1 clarity) in 14K yellow gold is estimated at $2,175–$2,550 complete on our design desk, including the IGI-certified center, setting and your custom 3D render. In E–F color and VVS2 clarity it is $2,625–$2,925. Your exact price comes with your 3D render.

Can I get a 3 carat marquise ring under $4,000?

Yes, on our estimates. A 3ct marquise solitaire in 14K gold is estimated at $2,175–$2,550 in F/VS1 and $2,625–$2,925 in E–F/VVS2 on our design desk, and a 3.0ct E–F/VVS2 hidden halo in 14K yellow gold is $2,900–$3,225 on our ring price estimator. A pavé band, 18K gold or platinum add to that and are quoted on your specs.

Is a marquise cheaper than an oval at 3 carats?

Not meaningfully on our desk. 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. The bigger difference is look: a marquise is long and narrow with two points, so it faces up longer than an oval of the same weight.

How big is a 3 carat marquise diamond?

Based on IGI-graded 3 carat lab-grown marquise stones in our supplier feed in October 2026, a 3 carat marquise measures about 14.5–15.8 mm long and 7.4–7.7 mm wide, compared with about 9.2–9.4 mm across for a 3 carat round.

Can I get a 3 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 3 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: custom marquise ring cost · marquise and emerald cut prices · 3 carat ring prices · 2 carat bezel-set prices · ring price estimator

Lavora Diamonds · 412 West Rivers Edge Drive, Provo UT 84604 · text (385) 592-7180