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

As of November 2026, 3.00 to 4.99ct E FL lab grown marquise diamonds typically cost £3,034 GBP to £11,974 GBP, with a median price of £6,529 GBP. There are currently 30 diamonds matching this specification available across retailers.

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

About 47% of these diamonds are available at multiple retailers, with an average price spread of 70%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct E FL Lab Grown Marquise

Quick answer

As of November 2026, there are 30 lab grown marquise diamonds with E colour and FL clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £3,034 GBP to £11,974 GBP, with a median of £6,529 GBP. 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 70%. Half of all listings fall between £1,220 GBP and £2,535 GBP per carat. The same specification in natural form lists at a median of about £25,976 GBP per carat. Over the last 30 days the median price moved -12.5% and the number of listings moved +11.9%.

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: November 2026

Available

Lowest Price

£2,474 GBP

Highest Price

£29,247 GBP

Average Price

£7,042 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

47.1%

Price Spread

70.5%

30-Day Price Trend

-12.5%

30-Day Supply Change

+11.9%

Volatility (30d)

0.05

Price Range

Price per carat distribution across retailers

$2,501/ct

10th Percentile

$1,255

Median

$2,501

90th Percentile

$4,526

Score Distribution

71 diamonds scored across 4 quality tiers

Excellent

31 (43.7%)

Very Good

5 (7.0%)

Good

28 (39.4%)

Average

7 (9.9%)

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

F FLF colour is visually identical to E to the naked eye

Save 25%

E IFIF inclusions are not visible without magnification

Save 26%

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