6 Carat Lab Grown Diamond Engagement Rings

Choosing the Stone for a 6 Carat Lab Grown Diamond Engagement Ring

All 680 or more 6 carat lab grown diamond engagement ring designs here are shown in 14K white gold, with the head sized to the six carat lab grown diamond you choose. You pick that stone from the 16,239 we hold today in the 5.90 to 6.10 carat window, 14,209 of them with 360 HD video. Savings applied, the stones begin at $2,780 and the median is $5,583. Most designs are shown with a round, and for a 6 carat lab grown engagement ring in that shape the round itself starts at $3,165, with a median of $5,684. Made up today with a 6.01 carat lab round, the Linda comfort fit solitaire comes to $3,855, the Vivian solitaire to $4,185 and the Bellora hidden halo to $4,635, with the stone included in each price. The 6 carat designs are repriced as inventory moves, and these counts were pulled on October 19, 2026.

A round of this weight spans about 11.7 mm, which is wide enough to be noticed from across a room, and for most people a lab grown stone is the only way a diamond that size will ever reach their hand. Each 6 carat lab diamond engagement ring here is priced with the stone in it, and the shape table below gives the stone price and the stock count for each cut.

Lab Grown Stones at Six Carats, Shape by Shape

Because the head of the ring is made to the shape of the stone, shape is the first decision. The table below sorts all 16,239 stones by it, so the rows add back up to the headline count. Rounds are the deepest row at 3,673 stones with a median of $5,684, and pears come next with 3,486. Comparing medians, the marquise is the least expensive shape at this weight ($5,454) and the princess the most ($5,710). An oval, pear or marquise also faces up larger than a round of the same weight, so at six carats the elongated cuts cover more of the finger and tend to cost less. Clicking a shape takes you to its own lab ring page, where these same designs are made up with a six carat stone of that cut.

Lab grown stones at 6 carats (5.90 to 6.10 ct) sorted by shape: 16,239 stones at today's prices, October 19, 2026

Stones on Either Side of 6 Carats

Only 729 of the stones sit between 5.90 and 5.99 carats, and on the finger a ring built around one of them looks no different from the 15,510 that weigh 6.00 to 6.10. The lighter group has a median of $5,657 against $5,583 for the heavier one. Keeping grade fixed on rounds, at D to F color and VS2 or better clarity, the medians come to $5,669 under the mark and $5,674 over it. That makes the discount for stopping short $5, on a difference in diameter nobody can see. In lab grown that is too little to matter, so most buyers go for the whole number.

Lab stones a shade below and a shade above 6 carats: every shape, then rounds alone at one fixed grade (October 19, 2026)

Picking Color and Clarity for a Lab Grown Round This Size

On the color ladder for lab rounds at this weight, 96 percent of the stones are D to F once clarity is held at VS2 or better. A D color starts at $5,615 where a G starts at $3,870, and with color held at D to F, VS1 opens at $5,005 and VVS2 at $5,420. The step up in color is real here, but a D lab stone still costs a small fraction of a G natural one. A sensible 6 carat lab diamond engagement ring still takes a D to F, VS1 or better stone with an Excellent cut, and G or H is where to save.

Lowest price at each color grade among 6 carat lab rounds, 5.90 to 6.10 ct, VS2 or better (3,658 stones), then at each clarity grade for D to F color (3,527 stones)

What the Natural Stone Adds to the Same Mounting

Put a G color VS1 round of this weight into the same mounting and the stone alone starts at $4,435 lab grown or $115,010 natural. Across every shape, the medians in this weight range are $5,583 and $108,288, and natural stock is thin at 229 stones against 16,239 lab, 188 of those 229 with GIA reports. The lab stone matches the natural for size and for sparkle at a fraction of the price, while the natural stone is the scarce one. Our 6 carat natural diamond engagement rings page shows these same designs priced with the natural stone.

Lab against natural: 6 ct rounds from 5.90 to 6.10 ct at matched grades, October 19, 2026

Building the Ring Around a Stone This Size

Under a lab grown stone of six carats the band starts at 3 mm, and from there the ring is custom in everything but the name. It needs a bezel or an eight prong head, a gallery beneath the pavilion to carry it, and a shank broad enough that the ring does not roll on the finger. An elongated stone set low wears more easily than a tall round. Because the lab stone costs what it does, there is money left for a heavier band and more metal around it. A ring this size should be insured and appraised, and a jeweler should look it over every six months.

Set on a slim band, a 6 ct lab oval or pear gives the largest looking ring you can buy at this price, because the elongated cuts read larger for the same weight. Face up, a 6 carat round runs about 11.7 mm, an oval 14.5 x 10.5 mm, an emerald cut 12 x 9 mm and a cushion 11 mm. The images here use a six carat lab round in 14K white gold, and every design is also made in yellow gold, rose gold and platinum around whichever stone you pick. Our gemologists earn no commission on what you choose, and over chat or phone they will put your 6 carat lab grown engagement ring finalists side by side on video with you.

The 6 Carat Lab Grown Diamond Engagement Ring, Priced as a Whole

In 14K white gold with a 6.01 carat lab round as the default center, every design in the grid above is priced as a finished ring, so the table that follows shows what you would pay with the diamond already in place. The first designs shown span $3,855 for the Linda comfort fit solitaire up to $4,635 for the Bellora hidden halo, and that gap comes down to the mounting. The gap between this page and its natural twin comes from the stone. Choose a different diamond from the 16,239 in the window and the 6 carat lab grown diamond engagement ring is repriced around your choice.

Price of each 6 carat lab grown engagement ring as shown here, 14K white gold with the center stone in it, October 19, 2026

Buying a 6 Carat Lab Diamond Engagement Ring Direct from Rare Carat

Rare Carat sells you the ring directly and is the merchant of record on every order, and any of the more than 2 million natural and lab grown diamonds we carry can be set into these designs. Should the fit need adjusting, resizing is free during the first year, and the mounting carries a lifetime manufacturing warranty. Before anything ships, our New York staff put the center stone under a microscope and match its inscription to the grading report. Free insured shipping comes with each order, and returns are free for 30 days. If you would rather pay over time, plans from Affirm, Klarna, Afterpay, PayPal Pay Later and Katapult are offered at checkout. Customers rate Rare Carat 5 out of 5 on Google and on Trustpilot, and Trustpilot ranks it the highest rated jewelry brand in America.

Every stone count and price above comes from Rare Carat inventory on October 19, 2026. The figures cover each lab grown diamond weighing 5.90 to 6.10 carats that passes the filters the diamond grids use: Good cut or better, GIA, IGI or GCAL graded, with or without video, D to K color, and FL to SI2 clarity. That gives 16,239 lab grown stones, 14,209 of them with 360 HD video, and the 229 natural stones used for the comparison. A price is the amount charged today with savings already taken off; the regular price appears struck through on the stone itself. A starting price means the cheapest stone in that row at any grade or weight. A ring price means the finished ring as it appears here on October 19, 2026, in 14K white gold and with the named center stone in it, and the design count is the one the page shows. The color and clarity ladders and the matched grade table use round stones only, so that price moves with grade and not with shape.