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

As of September 2026, 1.00 to 1.49ct E IF lab grown marquise diamonds typically cost £172 GBP to £1,417 GBP, with a median price of £558 GBP. There are currently 684 diamonds matching this specification available across retailers.

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

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1.00 to 1.49ct E IF Lab Grown Marquise

Quick answer

As of September 2026, there are 684 lab grown marquise diamonds with E colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £172 GBP to £1,417 GBP, with a median of £558 GBP. At least 42 retailers stock this exact specification. Half of all listings fall between £420 GBP and £999 GBP per carat. The same specification in natural form lists at a median of about £7,201 GBP 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

684

Lowest Price

£122 GBP

Highest Price

£6,701 GBP

Average Price

£779 GBP

Market Intelligence

Retailers Selling

Price Spread

99.5%

Price Range

Price per carat distribution across retailers

$740/ct

10th Percentile

$382

Median

$740

90th Percentile

$1,921

Score Distribution

684 diamonds scored across 5 quality tiers

Exceptional

3 (0.4%)

Excellent

204 (29.8%)

Very Good

137 (20.0%)

Good

103 (15.1%)

Average

237 (34.6%)

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Consider Instead

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

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

Save 11%

E VVS1VVS1 inclusions are not visible without magnification

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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