How Much Does a 2 Carat Lab Grown Round Cut Diamond Cost?

A 2 carat lab-grown round diamond costs between $2,293 and $3,331 as a loose stone in Australia, with a median of $2,554. That covers the 34 round stones between 2.00 and 2.09 carats on our live feed on 17 September 2026, every one of them D to F colour, VS1 clarity or better, and IGI certified.

Set in a finished engagement ring, a 2 carat round costs $4,750 to $5,400 in 18k gold, or $4,800 to $5,550 in platinum. Those are the fixed prices of our nine complete 2 carat round rings, each made with a 2.00 to 2.09ct E to F colour, VVS1 clarity centre stone.

The rest of this page breaks those numbers down by carat weight, clarity and setting, so you can see where the price moves and where it does not.

Carat weight moves the price less than most people expect. These are all the round lab-grown stones on our feed from 1.80 to 2.49 carats, with the median price and the typical width across the top of the stone:

1 stone listed at more than twice the median for its group is left out of the price ranges, because it is priced far above stones of the same weight and grade.

Two things stand out. A stone just under 2 carats, between 1.90 and 1.99ct, has a median about $145 lower than one between 2.00 and 2.09ct, and it measures about 0.1mm narrower, which nobody can see on a hand. And going up does not always cost more: the few stones between 2.10 and 2.19ct had a lower median than the exact 2 carat group. Prices only climb clearly once you pass 2.20 carats.

Round numbers sell. Far more people search for, and ask for, a 2 carat diamond than a 1.97 carat one, so stones that cross the 2.00 line carry a premium for the label rather than for anything you can see.

On lab-grown rounds today, that premium mostly shows up at the top clarity grade. Comparing stones of the same clarity across weights:

At VS1, a stone between 1.90 and 1.99ct and one between 2.00 and 2.09ct cost almost exactly the same. At VVS1, the 2 carat stones cost about 20% more than the ones just below. So if you want VVS1, dropping to 1.95 or 1.97 carats is where the saving is. If VS1 suits you, there is little to gain by going under 2 carats.

Clarity is the biggest single lever on a 2 carat round's price. Among the 2.00 to 2.09ct stones:

VS1 and VVS2 stones price almost the same, and VVS1 costs about $825 more at the median. All three grades usually look clean to the eye on a round brilliant, because its facet pattern hides small inclusions well. The VVS1 premium buys a cleaner report rather than a visibly cleaner stone.

Colour barely moves the price at this weight. Every 2 carat round on the feed is D, E or F, the three colourless grades, and their medians sat within $115 of each other: $2,496 for D, $2,566 for E and $2,610 for F. Cut grade was similar too, with ideal cut stones at a $2,632 median and excellent cut at $2,458.

Our complete 2 carat round rings each come with a 2.00 to 2.09ct, E to F colour, VVS1 clarity, IGI certified centre stone, set on a 2mm band in solid 18k gold or platinum. The price includes the diamond and the setting:

At that stone grade, the loose diamond runs $2,532 to $3,331 on its own, so the setting, the metal and the making account for the rest. Every ring uses the same stone grade, so the differences come from the design: solitaires run $4,750 to $4,950 in 18k gold, the halo is $5,150, and the three-stone rings with extra diamonds on either side run $5,300 to $5,400.

If you would rather choose the exact stone, for example a 1.97 carat VVS1 to save on the round-number premium, you can pick it yourself in our ring builder and pair it with a setting.

A mined 2 carat round costs several times as much. When we checked in July 2026, a live J colour, SI2 clarity natural round was $8,201 as a loose stone, a lower colour and clarity than any lab-grown round on our feed at a little over three times the median lab-grown price. Both are real diamonds graded on the same scales. The difference is origin and rarity, which we cover in lab-grown vs natural diamonds.

As of 17 September 2026, a 2 carat lab-grown round costs $2,293 to $3,331 loose, and a complete 2 carat round engagement ring costs $4,750 to $5,550. To spend less, drop to VS1 or VVS2 clarity before you drop carat weight. If you want VVS1, look at stones just under 2 carats. Lab-grown prices keep moving, so treat these as dated figures rather than a quote, and browse our 2 carat engagement rings for live prices.

Thanks for reading,
Jared and Brie