How much does a 0.20 to 0.49ct E VS1 lab grown marquise diamond cost?

As of October 2026, 0.20 to 0.49ct E VS1 lab grown marquise diamonds typically cost £62 GBP to £353 GBP, with a median price of £138 GBP. There are currently 313 diamonds matching this specification available across retailers.

Where can I find the best price on a E VS1 marquise diamond?

About 62% of these diamonds are available at multiple retailers, with an average price spread of 172%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct E VS1 Lab Grown Marquise

Quick answer

As of October 2026, there are 313 lab grown marquise diamonds with E colour and VS1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run £62 GBP to £353 GBP, with a median of £138 GBP. At least 20 retailers stock this exact specification, and 62% of the stones appear at more than one of them, with an average price spread of 172%. Half of all listings fall between £194 GBP and £632 GBP per carat. The same specification in natural form lists at a median of about £1,352 GBP per carat. Over the last 30 days the median price moved +12.8% and the number of listings moved +74.0%.

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

313

Lowest Price

£38 GBP

Highest Price

£691 GBP

Average Price

£176 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

61.6%

Price Spread

172.0%

30-Day Price Trend

+12.8%

30-Day Supply Change

+74.0%

Volatility (30d)

0.09

Price Range

Price per carat distribution across retailers

$339/ct

10th Percentile

$229

Median

$339

90th Percentile

$1,067

Score Distribution

746 diamonds scored across 4 quality tiers

Excellent

188 (25.2%)

Very Good

179 (24.0%)

Good

194 (26.0%)

Average

185 (24.8%)

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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