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

As of October 2026, 3.00 to 4.99ct D FL lab grown marquise diamonds typically cost €3,153 EUR to €12,929 EUR, with a median price of €7,499 EUR. There are currently 168 diamonds matching this specification available across retailers.

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

About 47% of these diamonds are available at multiple retailers, with an average price spread of 80%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct D FL Lab Grown Marquise

Quick answer

As of October 2026, there are 168 lab grown marquise diamonds with D colour and FL clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run €3,153 EUR to €12,929 EUR, with a median of €7,499 EUR. At least 36 retailers stock this exact specification, and 47% of the stones appear at more than one of them, with an average price spread of 80%. Half of all listings fall between €1,450 EUR and €3,243 EUR per carat. Over the last 30 days the median price moved -14.2% and the number of listings moved +14.9%.

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. Marquise lab grown stones in the index: 485 USD per carat, -3.2% 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

168

Lowest Price

€2,803 EUR

Highest Price

€41,336 EUR

Average Price

€8,132 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

47.3%

Price Spread

80.1%

30-Day Price Trend

-14.2%

30-Day Supply Change

+14.9%

Volatility (30d)

0.05

Price Range

Price per carat distribution across retailers

$2,501/ct

10th Percentile

$1,261

Median

$2,501

90th Percentile

$4,684

Score Distribution

482 diamonds scored across 5 quality tiers

Exceptional

8 (1.7%)

Excellent

169 (35.1%)

Very Good

24 (5.0%)

Good

194 (40.2%)

Average

87 (18.0%)

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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