4 carat elongated cushion lab-grown engagement ring price

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

Short answer: at Lavora Diamonds, a 4 carat elongated cushion lab-grown solitaire (E–F color, VVS2 clarity) in 14K yellow gold is estimated at $3,150–$3,500 complete on our ring price estimator. That covers the IGI-certified center, the setting and your custom 3D render.

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

With a hidden halo, our estimator puts a 3.0ct E–F/VVS2 elongated cushion at $2,900–$3,225 complete, and a completed Lavora 3.50ct G VS1 cushion came to $3,597 complete. 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 elongated cushion cut price guide

Build	Price	Source
4.0ct elongated cushion · E–F/VVS2 · 14K yellow · solitaire	$3,150–$3,500	Ring price estimator
3.0ct elongated cushion · E–F/VVS2 · 14K yellow · hidden halo	$2,900–$3,225	Ring price estimator
3.50ct cushion · G/VS1	$3,597 complete	Completed build
4.0ct oval · E–F/VVS2 · 14K yellow · solitaire (for comparison)	$3,150–$3,500	Ring price estimator
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; completed builds are past Lavora rings. See our ring price estimator and completed ring prices. Your exact price comes with your 3D render.

How big is it?

An elongated cushion is a rectangular cushion with soft, rounded corners. It sits between an oval and a radiant in look. Measurements below come from IGI-graded 4 carat lab-grown cushions in our supplier feed with a length-to-width ratio of 1.15 or more, October 2026.

Center	Face-up size
4ct elongated cushion	about 10.5–11.8 mm long, 7.9–8.3 mm wide
4ct oval (for comparison)	about 12.6–13.4 mm long, 8.8–9.0 mm wide
4ct round (for comparison)	about 10.2–10.3 mm across

Carat for carat, an elongated cushion is shorter and narrower than an oval because it carries more weight in its depth and corners. If face-up size matters most, compare millimeters with your 3D render.

Buying tips

• Clarity: VS1+. Cushion faceting hides small inclusions well, and VS1 is our floor.
• Ratio: tell us how elongated you want it; a longer ratio reads slimmer, a shorter one reads closer to square.
• Setting: four-prong, hidden halo, pavé and east-west settings all suit an elongated cushion; we show each option in your 3D render before you commit.
• Cushion vs oval: see oval and cushion cut prices to compare both shapes.

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.

Elongated cushion cut questions

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

At Lavora Diamonds, a 4 carat elongated cushion lab-grown solitaire (E–F color, VVS2 clarity) in 14K yellow gold is estimated at $3,150–$3,500 complete on our ring price estimator, including the IGI-certified center, setting and your custom 3D render. Your exact price comes with your 3D render.

How much is an elongated cushion with a hidden halo?

Our ring price estimator puts a 3.0ct E–F/VVS2 elongated cushion with a hidden halo in 14K yellow gold at $2,900–$3,225 complete. A 4 carat hidden halo version is quoted on your specs.

Is an elongated cushion cheaper than an oval?

On our estimator, a 4.0ct E–F/VVS2 solitaire in 14K yellow gold is $3,150–$3,500 complete for both the elongated cushion and the oval. The difference is look and face-up size, not price.

How big is a 4 carat elongated cushion?

Based on IGI-graded 4 carat lab-grown cushions with a length-to-width ratio of 1.15 or more in our supplier feed in October 2026, a 4 carat elongated cushion measures about 10.5–11.8 mm long and 7.9–8.3 mm wide.

Can I get a 4 carat elongated cushion in platinum?

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

How do I pay for a custom elongated cushion 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: oval and cushion cut prices · 4 carat ring prices · 2 carat cushion prices · ring price estimator

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