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

As of September 2026, 2.00 to 2.99ct G SI2 natural marquise diamonds typically cost $8,272 USD to $24,656 USD, with a median price of $15,538 USD. There are currently 373 diamonds matching this specification available across retailers.

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2.00 to 2.99ct G SI2 Natural Marquise

Quick answer

As of September 2026, there are 373 natural marquise diamonds with G color and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $8,272 USD to $24,656 USD, with a median of $15,538 USD. At least 46 retailers stock this exact specification. Half of all listings fall between $5,899 USD and $9,740 USD per carat. The same specification in lab grown form lists at a median of about $10,851 USD 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

373

Lowest Price

$4,252 USD

Highest Price

$68,180 USD

Average Price

$16,090 USD

Market Intelligence

Retailers Selling

Price Spread

47.1%

Price Range

Price per carat distribution across retailers

$8,151/ct

10th Percentile

$4,665

Median

$8,151

90th Percentile

$11,101

Score Distribution

373 diamonds scored across 4 quality tiers

Excellent

66 (17.7%)

Very Good

126 (33.8%)

Good

124 (33.2%)

Average

57 (15.3%)

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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