How much does a 0.50 to 0.74ct I VVS2 lab grown marquise diamond cost?

As of October 2026, 0.50 to 0.74ct I VVS2 lab grown marquise diamonds typically cost £213 GBP to £450 GBP, with a median price of £278 GBP. There are currently 8 diamonds matching this specification available across retailers.

Where can I find the best price on a I VVS2 marquise diamond?

About 45% of these diamonds are available at multiple retailers, with an average price spread of 102%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct I VVS2 Lab Grown Marquise

Quick answer

As of October 2026, there are 8 lab grown marquise diamonds with I colour and VVS2 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run £213 GBP to £450 GBP, with a median of £278 GBP. At least 29 retailers stock this exact specification, and 45% of the stones appear at more than one of them, with an average price spread of 102%. Half of all listings fall between £434 GBP and £1,023 GBP per carat. The same specification in natural form lists at a median of about £1,379 GBP per carat. Over the last 30 days the median price moved +1.1% 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

£120 GBP

Highest Price

£942 GBP

Average Price

£322 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

44.6%

Price Spread

102.2%

30-Day Price Trend

+1.1%

30-Day Supply Change

+18.1%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$768/ct

10th Percentile

$284

Median

$768

90th Percentile

$2,515

Score Distribution

9 diamonds scored across 4 quality tiers

Excellent

1 (11.1%)

Very Good

4 (44.4%)

Good

3 (33.3%)

Average

1 (11.1%)

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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