How much does a 2.00 to 2.99ct H SI1 natural marquise diamond cost?

As of September 2026, 2.00 to 2.99ct H SI1 natural marquise diamonds typically cost €11,631 EUR to €25,527 EUR, with a median price of €17,429 EUR. There are currently 179 diamonds matching this specification available across retailers.

Where can I find the best price on a H SI1 marquise diamond?

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2.00 to 2.99ct H SI1 Natural Marquise

Quick answer

As of September 2026, there are 179 natural marquise diamonds with H colour and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run €11,631 EUR to €25,527 EUR, with a median of €17,429 EUR. At least 51 retailers stock this exact specification. Half of all listings fall between €7,142 EUR and €9,843 EUR per carat. The same specification in lab grown form lists at a median of about €1,426 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

179

Lowest Price

€5,777 EUR

Highest Price

€65,734 EUR

Average Price

€18,703 EUR

Market Intelligence

Retailers Selling

Price Spread

32.0%

Price Range

Price per carat distribution across retailers

$9,684/ct

10th Percentile

$6,717

Median

$9,684

90th Percentile

$13,054

Score Distribution

179 diamonds scored across 4 quality tiers

Excellent

5 (2.8%)

Very Good

34 (19.0%)

Good

77 (43.0%)

Average

63 (35.2%)

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Consider Instead

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

H SI2SI2 inclusions are not visible without magnification

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Lab-Grown H SI1Same 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