How much does a 2.00 to 2.99ct J SI2 natural marquise diamond cost?

As of September 2026, 2.00 to 2.99ct J SI2 natural marquise diamonds typically cost €4,886 EUR to €16,482 EUR, with a median price of €9,816 EUR. There are currently 341 diamonds matching this specification available across retailers.

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

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2.00 to 2.99ct J SI2 Natural Marquise

Quick answer

As of September 2026, there are 341 natural marquise diamonds with J colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run €4,886 EUR to €16,482 EUR, with a median of €9,816 EUR. At least 44 retailers stock this exact specification. Half of all listings fall between €3,606 EUR and €5,710 EUR per carat. The same specification in lab grown form lists at a median of about €2,862 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 natural stones in the index: 2,114 USD per carat, -8.8% 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

341

Lowest Price

€2,946 EUR

Highest Price

€104,284 EUR

Average Price

€10,630 EUR

Market Intelligence

Retailers Selling

Price Spread

44.6%

Price Range

Price per carat distribution across retailers

$5,410/ct

10th Percentile

$2,862

Median

$5,410

90th Percentile

$7,483

Score Distribution

341 diamonds scored across 4 quality tiers

Excellent

14 (4.1%)

Very Good

103 (30.2%)

Good

117 (34.3%)

Average

107 (31.4%)

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

J I1I1 inclusions are not visible without magnification

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Lab-Grown J SI2Same specifications, lab-grown origin

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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