How much does a 1.50 to 1.99ct E FL lab grown marquise diamond cost?

As of October 2026, 1.50 to 1.99ct E FL lab grown marquise diamonds typically cost £557 GBP to £2,463 GBP, with a median price of £1,258 GBP. There are currently 59 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 100%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct E FL Lab Grown Marquise

Quick answer

As of October 2026, there are 59 lab grown marquise diamonds with E colour and FL clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run £557 GBP to £2,463 GBP, with a median of £1,258 GBP. At least 45 retailers stock this exact specification, and 47% of the stones appear at more than one of them, with an average price spread of 100%. Half of all listings fall between £616 GBP and £1,532 GBP per carat. The same specification in natural form lists at a median of about £10,439 GBP per carat. Over the last 30 days the median price moved -11.9% and the number of listings moved +18.1%.

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

Lowest Price

£370 GBP

Highest Price

£6,702 GBP

Average Price

£1,510 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

47.3%

Price Spread

100.4%

30-Day Price Trend

-11.9%

30-Day Supply Change

+18.1%

Volatility (30d)

0.05

Price Range

Price per carat distribution across retailers

$1,222/ct

10th Percentile

$657

Median

$1,222

90th Percentile

$2,448

Score Distribution

165 diamonds scored across 4 quality tiers

Excellent

67 (40.6%)

Very Good

17 (10.3%)

Good

56 (33.9%)

Average

25 (15.2%)

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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