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

As of November 2026, 3.00 to 4.99ct I VS1 lab grown marquise diamonds typically cost €714 EUR to €2,969 EUR, with a median price of €1,297 EUR. There are currently 18 diamonds matching this specification available across retailers.

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

About 16% of these diamonds are available at multiple retailers, with an average price spread of 80%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct I VS1 Lab Grown Marquise

Quick answer

As of November 2026, there are 18 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 €714 EUR to €2,969 EUR, with a median of €1,297 EUR. At least 31 retailers stock this exact specification, and 16% of the stones appear at more than one of them, with an average price spread of 80%. Half of all listings fall between €337 EUR and €821 EUR per carat. The same specification in natural form lists at a median of about €13,210 EUR per carat. Over the last 30 days the median price moved +37.9% and the number of listings moved +5.7%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Marquise lab grown stones in the index: 505 USD per carat, +1.6% 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: November 2026

Available

Lowest Price

€618 EUR

Highest Price

€5,000 EUR

Average Price

€1,746 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

16.2%

Price Spread

79.5%

30-Day Price Trend

+37.9%

30-Day Supply Change

+5.7%

Volatility (30d)

0.05

Price Range

Price per carat distribution across retailers

$680/ct

10th Percentile

$256

Median

$680

90th Percentile

$1,143

Score Distribution

32 diamonds scored across 4 quality tiers

Excellent

9 (28.1%)

Very Good

2 (6.3%)

Good

14 (43.8%)

Average

7 (21.9%)

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J VS1J colour is visually identical to I to the naked eye

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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