How much does a 3.00 to 4.99ct I VS1 lab grown marquise diamond cost?

As of September 2026, 3.00 to 4.99ct I VS1 lab grown marquise diamonds typically cost €816 EUR to €6,759 EUR, with a median price of €3,010 EUR. There are currently 31 diamonds matching this specification available across retailers.

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

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3.00 to 4.99ct I VS1 Lab Grown Marquise

Quick answer

As of September 2026, there are 31 lab grown marquise diamonds with I colour and VS1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run €816 EUR to €6,759 EUR, with a median of €3,010 EUR. At least 23 retailers stock this exact specification. Half of all listings fall between €242 EUR and €922 EUR per carat. The same specification in natural form lists at a median of about €12,902 EUR 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

Lowest Price

€438 EUR

Highest Price

€7,214 EUR

Average Price

€3,291 EUR

Market Intelligence

Retailers Selling

Price Spread

208.7%

Price Range

Price per carat distribution across retailers

$374/ct

10th Percentile

$230

Median

$374

90th Percentile

$1,231

Score Distribution

31 diamonds scored across 3 quality tiers

Very Good

3 (9.7%)

Good

6 (19.4%)

Average

22 (71.0%)

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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