How much does a 3.00 to 4.99ct D FL lab grown round diamond cost?

As of October 2026, 3.00 to 4.99ct D FL lab grown round diamonds typically cost $1,802 USD to $16,266 USD, with a median price of $4,579 USD. There are currently 1,818 diamonds matching this specification available across retailers.

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

About 49% of these diamonds are available at multiple retailers, with an average price spread of 104%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct D FL Lab Grown Round

Quick answer

As of October 2026, there are 1,818 lab grown round diamonds with D color and FL clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $1,802 USD to $16,266 USD, with a median of $4,579 USD. At least 43 retailers stock this exact specification, and 49% of the stones appear at more than one of them, with an average price spread of 104%. Half of all listings fall between $818 USD and $2,218 USD per carat. The same specification in natural form lists at a median of about $40,086 USD per carat. Over the last 30 days the median price moved -12.5% and the number of listings moved +4.3%.

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

1,818

Lowest Price

$1,161 USD

Highest Price

$40,265 USD

Average Price

$7,030 USD

Market Intelligence

Retailers Selling

Cross Retailer %

49.2%

Price Spread

104.2%

30-Day Price Trend

-12.5%

30-Day Supply Change

+4.3%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$1,344/ct

10th Percentile

$593

Median

$1,344

90th Percentile

$3,466

Score Distribution

3.7K diamonds scored across 5 quality tiers

Exceptional

154 (4.2%)

Excellent

1,320 (35.8%)

Very Good

574 (15.6%)

Good

1,193 (32.4%)

Average

444 (12.0%)

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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