How much does a 3.00 to 4.99ct J SI2 natural marquise diamond cost?

As of November 2026, 3.00 to 4.99ct J SI2 natural marquise diamonds typically cost €12,452 EUR to €40,171 EUR, with a median price of €23,088 EUR. There are currently 39 diamonds matching this specification available across retailers.

Where can I find the best price on a J SI2 marquise diamond?

About 44% of these diamonds are available at multiple retailers, with an average price spread of 45%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct J SI2 Natural Marquise

Quick answer

As of November 2026, there are 39 natural marquise diamonds with J color and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run €12,452 EUR to €40,171 EUR, with a median of €23,088 EUR. At least 44 retailers stock this exact specification, and 44% of the stones appear at more than one of them, with an average price spread of 45%. Half of all listings fall between €5,675 EUR and €9,195 EUR per carat. Over the last 30 days the median price moved +3.9% and the number of listings moved +14.5%.

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 natural stones in the index: 2,268 USD per carat, +10.8% 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

€7,890 EUR

Highest Price

€73,442 EUR

Average Price

€25,067 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

44.0%

Price Spread

44.7%

30-Day Price Trend

+3.9%

30-Day Supply Change

+14.5%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$8,791/ct

10th Percentile

$4,896

Median

$8,791

90th Percentile

$11,489

Score Distribution

92 diamonds scored across 4 quality tiers

Excellent

15 (16.3%)

Very Good

40 (43.5%)

Good

16 (17.4%)

Average

21 (22.8%)

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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