How much does a 2.00 to 2.99ct G SI1 lab grown round diamond cost?

As of October 2026, 2.00 to 2.99ct G SI1 lab grown round diamonds typically cost $345 USD to $2,090 USD, with a median price of $933 USD. There are currently 123 diamonds matching this specification available across retailers.

Where can I find the best price on a G SI1 round diamond?

About 25% of these diamonds are available at multiple retailers, with an average price spread of 85%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct G SI1 Lab Grown Round

Quick answer

As of October 2026, there are 123 lab grown round diamonds with G color and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $345 USD to $2,090 USD, with a median of $933 USD. At least 39 retailers stock this exact specification, and 25% of the stones appear at more than one of them, with an average price spread of 85%. Half of all listings fall between $229 USD and $516 USD per carat. The same specification in natural form lists at a median of about $10,800 USD per carat. Over the last 30 days the median price moved +6.8% and the number of listings moved +11.4%.

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

Caratlytics Diamond Price Index, September 2026: natural diamonds at 2,335 USD per carat and lab-grown at 443 USD per carat, a natural to lab ratio of 5.3 to 1. Round lab grown stones in the index: 414 USD per carat, -5.0% month on month. See the full index release

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

Last updated: October 2026

Available

123

Lowest Price

$250 USD

Highest Price

$4,253 USD

Average Price

$1,053 USD

Market Intelligence

Retailers Selling

Cross Retailer %

25.2%

Price Spread

85.2%

30-Day Price Trend

+6.8%

30-Day Supply Change

+11.4%

Volatility (30d)

0.05

Price Range

Price per carat distribution across retailers

$337/ct

10th Percentile

$150

Median

$337

90th Percentile

$704

Score Distribution

379 diamonds scored across 4 quality tiers

Excellent

66 (17.4%)

Very Good

35 (9.2%)

Good

69 (18.2%)

Average

209 (55.1%)

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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