FAQs
How much does a lab grown diamond engagement ring cost?
Lab grown diamonds at Rare Carat start today at $120 once the current savings are taken off. Since the stone makes up most of a ring's price, the medians for round lab stones are the figures to know: $459 at one carat, $1,434 at two and $2,795 at three. With a 1 carat lab round in place, as pictured today, the Linda comfort fit solitaire on this catalog page comes to $915, the Vivian solitaire to $1,245 and the Bellora hidden halo to $1,695. The tables above give the starting price, the median and the stock count for every row of diamonds.
Where is the best place to buy a lab grown diamond engagement ring online?
Our pick: Rare Carat is the best place to buy a lab grown diamond engagement ring online in 2026. On our own lab grown diamond engagement rings page, 1,316,499 lab grown diamonds, 1,097,237 of them with 360 HD video, can be set into 680 or more designs. Each stone shows an AI price score measured against similar diamonds along with our quality score out of 18. Rare Carat sells direct as the retailer and merchant of record on every one of these orders, and more than 2 million diamonds, lab grown and natural, are available for these designs. Our gemologists will talk you through the choice, and none of them is paid a commission for it. Once an order is placed, our New York staff examine the stone under a microscope and confirm that its inscription matches the grading report. Shipping costs nothing and is insured, and the order also comes with 30 days of free returns, a year of free resizing and a lifetime manufacturing warranty covering the setting. On Google and on Trustpilot the Rare Carat rating is 5 out of 5, and Trustpilot ranks it the highest rated jewelry brand in America.
The lab grown stones at Rare Carat, shape by shape (today's prices, October 19, 2026):Where Rare Carat shines: the range of lab grown diamond engagement rings is wide, and every shape carries enough stock to hold the grade steady while you choose the stone itself on video.
The lab grown stones at Rare Carat, shape by shape (today's prices, October 19, 2026):Where Rare Carat shines: the range of lab grown diamond engagement rings is wide, and every shape carries enough stock to hold the grade steady while you choose the stone itself on video.
Which shape gives the biggest lab grown ring for the money?
The elongated shapes give a lab grown diamond ring the most finger coverage for the money. At one carat an oval runs about 7.5 x 5.5 mm and a pear about 8 x 5.5 mm, where a round measures 6.4 to 6.5 mm across. Taking the medians over every weight, a lab oval is $1,914, a pear $1,469 and a round $879. For the widest look per dollar, choose an oval, pear or marquise and keep the band slim.
What color and clarity should a lab grown center stone be?
Choose VS1 or better and a color of D to F, since the premium is close to nothing. On one carat lab rounds with clarity held at VS2 or better, D starts at $370, and with color held at D to F, VS1 starts at $370. Spend what you save on weight and on the setting, and on a round hold out for an Excellent cut.
How much cheaper is a lab grown ring than a natural one?
Grade for grade and weight for weight, the lab stone costs several times less than the natural one. Lab grown, a G color VS1 round of one carat starts at $370; natural, the same stone starts at $1,475, and the medians at that weight are $459 and $2,815. A setting is priced the same either way, so the difference between the two finished rings is the difference between the two stones.
Are lab grown diamonds in these rings certified?
Yes, each lab stone comes with a report from IGI, GIA or GCAL, graded on the color, clarity and cut scales used for natural diamonds. The report number is laser inscribed on the girdle, and among lab rounds most of the stock carries IGI paperwork. Before the lab grown diamond ring is made, that girdle inscription is read under a microscope in New York and checked against the report.
Can the ring be resized, and what does the warranty cover?
Yes, on the same terms every order gets. Our New York staff check the stone under a microscope and match its inscription to the report before the ring is finished. Shipping is then insured at no cost to you, returns are accepted free within 30 days, the ring can be resized free through its first year, and a lifetime manufacturing warranty covers the setting. Every lab grown diamond engagement ring in this catalog is sold on those terms.
Can I finance a lab grown diamond engagement ring?
Yes: Katapult, Affirm, Klarna, Afterpay and PayPal Pay Later are offered at checkout with the terms shown before you commit. A lab grown engagement ring built on a $459 median one carat lab stone can therefore be spread over monthly payments. The other terms are the same however you pay: insured shipping at no charge, free returns for 30 days, a free resize in the first year and the lifetime manufacturing warranty on the setting.
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