How much does a 2.00 to 2.99ct D SI1 lab grown radiant diamond cost?

As of October 2026, 2.00 to 2.99ct D SI1 lab grown radiant diamonds typically cost $449 USD to $1,498 USD, with a median price of $829 USD. There are currently 79 diamonds matching this specification available across retailers.

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

About 26% of these diamonds are available at multiple retailers, with an average price spread of 92%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct D SI1 Lab Grown Radiant

Quick answer

As of October 2026, there are 79 lab grown radiant diamonds with D color and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $449 USD to $1,498 USD, with a median of $829 USD. At least 33 retailers stock this exact specification, and 26% of the stones appear at more than one of them, with an average price spread of 92%. Half of all listings fall between $238 USD and $599 USD per carat. The same specification in natural form lists at a median of about $11,011 USD per carat. Over the last 30 days the median price moved +23.3% and the number of listings moved +3.5%.

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. Radiant lab grown stones in the index: 474 USD per carat, -2.1% 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

Lowest Price

$221 USD

Highest Price

$4,480 USD

Average Price

$989 USD

Market Intelligence

Retailers Selling

Cross Retailer %

26.1%

Price Spread

92.3%

30-Day Price Trend

+23.3%

30-Day Supply Change

+3.5%

Volatility (30d)

0.08

Price Range

Price per carat distribution across retailers

$391/ct

10th Percentile

$143

Median

$391

90th Percentile

$793

Score Distribution

156 diamonds scored across 4 quality tiers

Excellent

22 (14.1%)

Very Good

19 (12.2%)

Good

57 (36.5%)

Average

58 (37.2%)

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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