How much does a 1.00 to 1.49ct E FL lab grown marquise diamond cost?

As of October 2026, 1.00 to 1.49ct E FL lab grown marquise diamonds typically cost £205 GBP to £1,791 GBP, with a median price of £451 GBP. There are currently 64 diamonds matching this specification available across retailers.

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

About 49% of these diamonds are available at multiple retailers, with an average price spread of 109%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct E FL Lab Grown Marquise

Quick answer

As of October 2026, there are 64 lab grown marquise diamonds with E colour and FL clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £205 GBP to £1,791 GBP, with a median of £451 GBP. At least 40 retailers stock this exact specification, and 49% of the stones appear at more than one of them, with an average price spread of 109%. Half of all listings fall between £370 GBP and £908 GBP per carat. The same specification in natural form lists at a median of about £7,150 GBP per carat. Over the last 30 days the median price moved -17.5% and the number of listings moved +18.8%.

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

£131 GBP

Highest Price

£3,403 GBP

Average Price

£759 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

49.3%

Price Spread

108.6%

30-Day Price Trend

-17.5%

30-Day Supply Change

+18.8%

Volatility (30d)

0.09

Price Range

Price per carat distribution across retailers

$661/ct

10th Percentile

$352

Median

$661

90th Percentile

$1,941

Score Distribution

149 diamonds scored across 4 quality tiers

Excellent

66 (44.3%)

Very Good

21 (14.1%)

Good

23 (15.4%)

Average

39 (26.2%)

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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