Radiant Cut Lab Grown Diamond Engagement Rings

What the Center Stone Adds to Radiant Lab Grown Diamond Engagement Rings

A radiant's crushed ice faceting spreads sparkle across the whole face of the stone, so the center looks lively even in a plain mount. That center is also most of what a finished ring costs. On this page, the 600 or more radiant lab grown diamond engagement ring designs are each built around a center you choose yourself. Today that choice runs to 88,897 lab radiant diamonds in stock, 77,844 of them carrying 360 HD video. After the current savings, the cheapest lab radiant is $130. Inside the 0.90 to 1.10 carat band, which is the weight these designs are pictured with, prices begin at $350 and the median is $597. The Linda comfort fit solitaire comes to $1,015, the Bellora hidden halo to $1,795 and the Vivian solitaire to $1,345, each shown with a 1.19 carat lab radiant in 14K white gold and priced with the stone included. The inventory figures on this page were taken on October 17, 2026 and are refreshed regularly.

Brilliant style facets fill a radiant's cropped corner rectangle, which makes it the liveliest of the rectangular cuts. It is a forgiving cut as well, since the crushed ice pattern disguises inclusions and tints of color. Most of the radiant supply is lab grown. For a radiant lab grown engagement ring, that makes an elongated ratio or a larger weight easy to find and inexpensive.

How Carat Weight Prices a Lab Grown Radiant

The table below sorts every lab radiant from our inventory into carat bands, and the rows sum to the 88,897 stones counted above. Stock is thickest at 4.11 ct and above, where 18,802 stones sit. For a lab grown radiant engagement ring, the center's median is $597 in the 0.90 to 1.10 carat band, $1,673 from 1.90 to 2.10 and $3,441 from 2.90 to 3.10. Whichever design you pick, the ring is priced as stone plus setting. Swap in a different stone and the same design reprices around it. Bands with a ring page of their own are linked, lab grown to lab grown.

Today's prices for 88,897 lab radiants, band by band, October 17, 2026

Which Color and Clarity a Lab Radiant Needs

The crushed ice faceting of a radiant breaks light into small flashes that mask body color and most inclusions. Grade is therefore hard to see in this cut, and in lab grown it costs little as well. Within the 0.90 to 1.10 carat band, 95 percent of the lab radiants on the color ladder are already D to F. With clarity held at VS2 or better, a D begins at $400 while a G begins at $385. Read the clarity ladder the same way: at D to F color, VS1 opens at $385 and VVS2 at $435. A lab grown radiant engagement ring center at D to F and VS1 or better is the reasonable choice. Whatever you would have spent on a higher grade can go to weight or to the setting instead.

Color ladder at VS2 or better (10,270 stones) and clarity ladder at D to F (9,853 stones), lab radiants of 0.90 to 1.10 ct, starting prices

The Natural Radiant Option

Cut to the same facet pattern, a natural radiant looks like the lab grown one beside it, and what changes is the budget. Put a one carat G color VS1 radiant in the same design and the center starts at $405 lab grown or $1,505 natural. The medians for the full one carat band are $597 and $2,398. The natural stone adds scarcity, and usually a GIA report as well, since 11,879 of the 12,178 natural radiants in stock carry one. The lab stone gives you more size and a higher grade at the same price. The radiant natural diamond engagement rings page prices these same designs with natural centers, and the radiant diamonds grid holds both origins.

Radiant, lab grown and natural at the same grades, 0.90 to 1.10 ct

Which Setting for a Radiant

With so much going on in the faceting, a radiant usually looks best in a plain solitaire. Four prongs sit on the cropped corners, which are safe from chipping, and a bezel is the other option. Elongated ratios make up most of the lab stock and pair well with a slim band or an east west mount. A squarer radiant lab grown engagement ring suits a halo or a three stone design with trapezoid sides.

At one carat a lab radiant runs about 6.5 by 5 mm. That is the size the radiant lab grown diamond engagement ring designs here are shown with, in 14K white gold. Every design can also be made in yellow gold, rose gold or platinum, and once you pick a stone the page shows it in the mount. Beside each stone, the AI price score measures it against comparable lab radiants in stock and flags any priced above its peers. Cut, color and clarity are folded together in the quality score out of 18. None of our gemologists earns a commission on what you buy. When you reach them by chat or phone, they will put two or three radiant finalists side by side on video and talk you through them.

Today's Price of a Radiant Lab Grown Diamond Engagement Ring

The list of designs below prices each one as a finished ring. Today the default center is a 1.19 carat lab radiant in 14K white gold, so each figure is a complete ring price for that stone and not a bare setting price. Among the first designs shown, the Linda comfort fit solitaire sits at $1,015 and the Bellora hidden halo at $1,795. The spread between them is entirely the setting, since the plain comfort fit solitaire is the cheapest mount while pavé and hidden halo designs cost the most. Pick another lab radiant from the 88,897 in stock and every radiant lab grown diamond engagement ring here changes price with it.

Complete ring prices for the radiant lab grown engagement rings shown here in 14K white gold, center included, October 17, 2026

How Rare Carat Handles Your Radiant Lab Grown Diamond Ring Order

Rare Carat is a direct retailer and the merchant of record for every order, and it holds more than 2 million diamonds in stock, natural and lab grown alike, for the center. Once the ring is made, the first resize is free for a year, and a lifetime manufacturing warranty stands behind the setting. Before the stone is set, our New York staff look it over under a microscope and match the laser inscription to what the grading report says. The finished ring ships free and fully insured, and returns are free within 30 days if it is not right. At checkout you can split the cost with Affirm, Klarna or Afterpay, or choose PayPal Pay Later or Katapult. On Google and on Trustpilot the rating is 5 out of 5, and no jewelry brand in America is rated higher than Rare Carat on Trustpilot.

The stone counts and prices here include every lab radiant diamond in Rare Carat's inventory on October 17, 2026 that passes the same filters as the diamond grids. Those filters are a Good cut or better, a grading report from GIA, IGI or GCAL, with or without video, color from D to K and clarity from FL to SI2. That comes to 88,897 lab grown stones, 77,844 of them with 360 HD video, plus 12,178 natural radiants used for the comparison. Prices are what you pay today after the current savings, with the regular price struck through beside it on every product page. In every row, the starting price belongs to the least expensive stone at any grade. Complete ring prices are the ones this page displayed on October 17, 2026, each one in 14K white gold with the center stone named, and the design count is this page's own. The color and clarity ladders stay inside the 0.90 to 1.10 carat band so that grade, not weight, is what moves the price.