3.5 carat oval lab-grown engagement ring price

How much is a 3.5 carat oval lab-grown engagement ring?

Short answer: at Lavora Diamonds, a 3.5 carat oval lab-grown solitaire (F color, VS1 clarity) in 14K yellow gold is estimated at $2,575–$3,025 complete on our ring price estimator, and a 3.5ct E–F/VVS2 oval with a hidden halo at $3,200–$3,525 complete. That covers the IGI-certified center, the setting and your custom 3D render. A completed Lavora 3.50ct oval with a hidden halo in 14K yellow gold came to $2,799 complete.

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

18K gold, platinum or a pavé band move the number up, and your exact price comes with your 3D render. Complete engagement rings have a $2,000 minimum.

Lavora 3.5 carat oval price guide

Build	Price	Source
3.5ct oval · F/VS1 · 14K yellow · solitaire	$2,575–$3,025	Ring price estimator
3.5ct oval · E–F/VVS2 · 14K yellow · hidden halo	$3,200–$3,525	Ring price estimator
3.50ct oval · 14K yellow · hidden halo, low-set basket	$2,799 complete	Completed build
3.0ct oval · E–F/VVS2 · 14K yellow · solitaire (for scale)	$2,625–$2,925	Ring price estimator
4.0ct oval · E–F/VVS2 · 14K yellow · solitaire (for scale)	$3,150–$3,500	Ring price estimator
Platinum, 18K gold or a pavé band	Raises the price	Quoted on your specs

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

How big is a 3.5 carat oval?

An oval is an elongated brilliant cut, so it spreads its weight along its length and looks larger face-up 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
3.5ct oval	about 11.8–13.1 mm long, 8.1–8.6 mm wide
3ct oval	about 11.4–12.1 mm long, 8.0–8.2 mm wide
4ct oval	about 12.6–13.4 mm long, 8.8–9.0 mm wide
3.5ct round (for comparison)	about 9.6–9.9 mm across

A typical 3.5 carat oval is roughly 2 to 3.5 mm longer than a 3.5 carat round is wide. Compare millimeters, not just carats, and ask for a render on your ring size.

Buying tips for a 3.5 carat oval

• Clarity: VS1+. Oval faceting hides small inclusions well, and VS1 is our floor.
• Grade vs carat: on our estimator a 3.5ct F/VS1 oval solitaire ($2,575–$3,025) lands close to a 3.0ct E–F/VVS2 oval solitaire ($2,625–$2,925). If size matters most, spend on carat and keep VS1 clarity.
• Ratio: most 3.5 carat ovals in our supplier feed run about 1.40 to 1.55 length-to-width. Tell us if you want a slimmer or a fuller oval and we match the stone to your 3D render.
• Bow-tie: many ovals show a darker bow-tie across the middle. It is not on the certificate, so ask us to check the bow-tie 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, for a $50 design fee that is refundable and 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.

3.5 carat oval questions

How much is a 3.5 carat oval lab-grown engagement ring?

At Lavora Diamonds, a 3.5 carat oval lab-grown solitaire (F color, VS1 clarity) in 14K yellow gold is estimated at $2,575–$3,025 complete on our ring price estimator, including the IGI-certified center, setting and your custom 3D render. A completed Lavora 3.50ct oval with a hidden halo in 14K yellow gold came to $2,799 complete. Your exact price comes with your 3D render.

How much is a 3.5 carat oval with a hidden halo?

Our ring price estimator puts a 3.5ct E–F/VVS2 oval with a hidden halo in 14K yellow gold at $3,200–$3,525 complete. A completed Lavora 3.50ct oval with a hidden halo and a low-set basket in 14K yellow gold came to $2,799 complete. A pavé band, 18K gold or platinum are quoted on your specs.

Can I get a 3.5 carat oval engagement ring for under $3,500?

Our estimator range for a 3.5ct F/VS1 oval solitaire in 14K yellow gold is $2,575–$3,025 complete, and the E–F/VVS2 hidden halo range is $3,200–$3,525. Diamond costs move, so your price is confirmed against live stone sourcing when you approve your 3D render.

How big is a 3.5 carat oval diamond?

Based on IGI-graded 3.5 carat lab-grown ovals in our supplier feed in October 2026, a 3.5 carat oval measures about 11.8–13.1 mm long and 8.1–8.6 mm wide, compared with about 9.6–9.9 mm across for a 3.5 carat round.

How much more is a 3.5 carat oval than a 3 carat or a 4 carat?

Our estimator puts a 3.0ct E–F/VVS2 oval solitaire in 14K yellow gold at $2,625–$2,925 complete, a 3.5ct F/VS1 oval solitaire at $2,575–$3,025 and a 4.0ct E–F/VVS2 oval solitaire at $3,150–$3,500. Color and clarity grades move the price as much as carat does.

How do I pay for a custom 3.5 carat oval 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 oval prices · 4 carat oval prices · 3.5 carat ring cost, all shapes · ring price estimator

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