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

As of October 2026, 2.00 to 2.99ct I SI1 lab grown round diamonds typically cost €985 EUR to €8,775 EUR, with a median price of €1,387 EUR. There are currently 296 diamonds matching this specification available across retailers.

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

About 36% of these diamonds are available at multiple retailers, with an average price spread of 77%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct I SI1 Lab Grown Round

Quick answer

As of October 2026, there are 296 lab grown round diamonds with I color and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run €985 EUR to €8,775 EUR, with a median of €1,387 EUR. At least 33 retailers stock this exact specification, and 36% of the stones appear at more than one of them, with an average price spread of 77%. Half of all listings fall between €952 EUR and €1,998 EUR per carat. The same specification in natural form lists at a median of about €7,651 EUR per carat. Over the last 30 days the median price moved +1.4% and the number of listings moved -1.6%.

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

296

Lowest Price

€351 EUR

Highest Price

€10,592 EUR

Average Price

€3,667 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

35.9%

Price Spread

76.9%

30-Day Price Trend

+1.4%

30-Day Supply Change

-1.6%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,521/ct

10th Percentile

$452

Median

$1,521

90th Percentile

$4,080

Score Distribution

517 diamonds scored across 4 quality tiers

Excellent

260 (50.3%)

Very Good

65 (12.6%)

Good

4 (0.8%)

Average

188 (36.4%)

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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