How much does a 2.00 to 2.99ct G I1 lab grown round diamond cost?

As of September 2026, 2.00 to 2.99ct G I1 lab grown round diamonds typically cost £6,014 GBP to £14,521 GBP, with a median price of £10,332 GBP. There are currently 37 diamonds matching this specification available across retailers.

Where can I find the best price on a G I1 round diamond?

About 20% of these diamonds are available at multiple retailers, with an average price spread of 60%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct G I1 Lab Grown Round

Quick answer

As of September 2026, there are 37 lab grown round diamonds with G colour and I1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run £6,014 GBP to £14,521 GBP, with a median of £10,332 GBP. At least 14 retailers stock this exact specification, and 20% of the stones appear at more than one of them, with an average price spread of 60%. Half of all listings fall between £2,652 GBP and £4,979 GBP per carat. The same specification in natural form lists at a median of about £5,403 GBP per carat. Over the last 30 days the median price moved -4.3% and the number of listings moved -47.9%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Round lab grown stones in the index: 438 USD per carat, -14.1% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

Lowest Price

£2,890 GBP

Highest Price

£19,084 GBP

Average Price

£10,337 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

19.7%

Price Spread

59.7%

30-Day Price Trend

-4.3%

30-Day Supply Change

-47.9%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$5,254/ct

10th Percentile

$1,337

Median

$5,254

90th Percentile

$7,515

Score Distribution

37 diamonds scored across 3 quality tiers

Very Good

6 (16.2%)

Good

7 (18.9%)

Average

24 (64.9%)

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Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1