Round Cut Lab Grown Diamond Engagement Rings

What You Get for the Money in a Round Lab Grown Diamond Engagement Ring

For $915, you get the Linda comfort fit solitaire as it appears today. That price covers a 1 carat lab round and the setting in 14K white gold. The Vivian solitaire at $1,245, shown the same way, comes next, and the Bellora hidden halo at $1,695 is the most expensive of the three. The diamond accounts for most of each of those figures. Rare Carat carries 670 or more round lab grown diamond engagement ring designs on this page. The center for any of them comes from 484,686 lab round diamonds in inventory today, 384,627 of those with 360 HD video. The least expensive lab round is $120 once the current savings come off. In the 0.90 to 1.10 carat band, the size the designs are shown at, prices begin at $330 with a median of $464. Inventory figures were pulled on October 17, 2026 and are refreshed on a regular schedule.

The round brilliant is the only shape that gets a cut grade from the laboratory. In lab grown it is also the shape where the grades run highest. In practice the stone you set is usually D to F, VS or better and Excellent cut, and you pay nothing extra for any of that. What remains to decide is carat weight, which the table below prices step by step.

Lab Grown Round Prices at Each Carat Weight

At the median you pay $464 for a lab round in the 0.90 to 1.10 carat band, $1,444 for one between 1.90 and 2.10 carats and $2,826 for one between 2.90 and 3.10. Those are three rows of the table below, which sorts every lab round on the diamond grid by carat band. Taken together the rows account for all 484,686 stones. The 0.90 to 1.10 band is the deepest at 116,471 stones. To arrive at a ring price you add whichever setting you pick from the grid. Move a different stone into the same design and the total changes with it. Where a band has its own ring page, the row links to it.

484,686 lab rounds sorted by carat band, today's prices, October 17, 2026

Choosing Color and Clarity in a Lab Round

Moving from G up to D color adds nothing to the starting price in the 0.90 to 1.10 carat band. Some 97 percent of the lab rounds on the color ladder in that band are D to F anyway. With clarity held at VS2 or better, the lowest price is $370 for D and $370 for G. Clarity works the same way from the other side: with color held at D to F, a VS1 lab round starts at $370 and a VVS2 at $380. The grade worth asking for in a lab round center is D to F with VS1 or better. You can put what higher grades would have cost into carat weight and the setting instead.

Starting prices for 0.90 to 1.10 ct lab rounds, by color with clarity at VS2 or better (114,744 stones) and by clarity with color at D to F (113,407 stones)

Pricing the Natural Round Instead

Put a natural round in the same design and the stone alone costs several times as much. A one carat G color VS1 round starts at $370 as a lab stone and $1,475 as a natural one. Across the full one carat band the medians are $464 and $2,834. With the natural stone you are paying for scarcity and, in most cases, a GIA report, since 335,900 of the 373,595 natural rounds carry one. With the lab stone you get more size and a higher grade for the same outlay. Our round natural diamond engagement rings page prices that route with these same designs, and the round diamonds grid carries both origins side by side.

Lab against natural: rounds of 0.90 to 1.10 ct at matching grades

Setting Choices for a Round Stone

Because a lab round costs so little at size, the pairing we see most often in a round lab grown engagement ring here is a plain solitaire around a larger stone. Fewer buyers put a smaller stone inside a busier setting. A round goes into any style of setting, and four prongs leave the most diamond visible. Six prongs hold a two carat and larger lab round more securely and give the outline a rounder look. A bezel sits low on the finger, which suits someone who works with their hands. Hidden halos add sparkle from the side without changing the look from above.

At one carat a lab round measures roughly 6.5 mm across, and at two carats roughly 8.1 mm. Each round lab grown diamond engagement ring on this page appears in 14K white gold with a stone of that size. Every design is also made in yellow gold, rose gold and platinum, and once you've picked a diamond the page shows it sitting in the setting. Each stone in the grid carries an AI price score, which measures it against similar lab rounds in stock and flags one priced above its peers. The quality score out of 18 folds cut, color and clarity into one reading. Our gemologists are paid no commission, and you can reach one by chat or phone to have two or three round finalists compared side by side on video.

What You Pay Today for a Round Lab Grown Diamond Engagement Ring

The first designs on this page land between $915 and $1,695 as complete rings. The Linda comfort fit solitaire sits at the low end and the Bellora hidden halo at the high end. Those figures cover the finished round lab grown diamond engagement ring, stone included, and the grid prices every design with a default center. Today that center is a 1 carat lab round in 14K white gold. The difference between the two comes down to the setting work. A plain comfort fit solitaire is the least expensive style, and a pavé or hidden halo design costs the most. Pick a different lab round from the 484,686 in stock and the price of each ring in the table follows the stone you chose.

Complete ring prices for the round lab grown engagement ring designs shown here, 14K white gold with center stone, October 17, 2026

How Rare Carat Handles Your Round Lab Grown Diamond Ring Order

Rare Carat sells you the ring directly and is the retailer and merchant of record on every order. There are more than 2 million natural and lab grown diamonds here to set. Shipping is free and insured, returns are free for 30 days, resizing is free for the first year, and the setting on every finished ring is covered by a lifetime manufacturing warranty. Before anything ships, the diamond goes to our New York facility. Staff there put it under a microscope and check that the laser inscription matches the grading report, and only then is the setting made. If you would rather pay over time, Klarna, Afterpay, PayPal Pay Later, Katapult and Affirm are offered at checkout. Buyers have rated Rare Carat 5 out of 5 on both Google and Trustpilot, which on Trustpilot makes it America's highest rated jewelry brand.

Stone counts and prices above come from every lab round that Rare Carat had in inventory on October 17, 2026 and that passes the filters the diamond grids use. Those filters are D to K color, FL to SI2 clarity, Good cut or better, GIA, IGI or GCAL graded, with or without video. That gives 484,686 lab grown stones (384,627 of them with 360 HD video) and, for the comparison rows, 373,595 natural rounds. A stone's price is what you pay for it today, after the current savings; the regular price shows struck through on each stone. Each starting price is the lowest priced stone in its row, whatever grade it has. Ring prices are for the complete ring as it appeared on this page on October 17, 2026, in 14K white gold with the named center stone. Design counts are likewise as shown on this page. The color and clarity ladders are limited to the 0.90 to 1.10 carat band so that the price differences reflect grade and not weight.