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

As of September 2026, 3.00 to 4.99ct E FL lab grown marquise diamonds typically cost $4,600 USD to $15,899 USD, with a median price of $10,189 USD. There are currently 108 diamonds matching this specification available across retailers.

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

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3.00 to 4.99ct E FL Lab Grown Marquise

Quick answer

As of September 2026, there are 108 lab grown marquise diamonds with E color and FL clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $4,600 USD to $15,899 USD, with a median of $10,189 USD. At least 28 retailers stock this exact specification. Half of all listings fall between $2,032 USD and $4,658 USD per carat. The same specification in natural form lists at a median of about $35,048 USD per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Marquise lab grown stones in the index: 500 USD per carat, -14.7% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

108

Lowest Price

$3,233 USD

Highest Price

$57,096 USD

Average Price

$10,678 USD

Market Intelligence

Retailers Selling

Price Spread

84.1%

Price Range

Price per carat distribution across retailers

$3,122/ct

10th Percentile

$1,414

Median

$3,122

90th Percentile

$6,974

Score Distribution

108 diamonds scored across 4 quality tiers

Excellent

29 (26.9%)

Very Good

31 (28.7%)

Good

22 (20.4%)

Average

26 (24.1%)

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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 41%

E IFIF inclusions are not visible without magnification

Save 23%

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