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

As of November 6, 2026, 2.00 to 2.99ct G SI2 natural marquise diamonds typically cost $13,690 NZD to $59,645 NZD, with a median price of $26,388 NZD. There are currently 481 diamonds matching this specification available across retailers.

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

About 35% of these diamonds are available at multiple retailers, with an average price spread of 68%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct G SI2 Natural Marquise

Quick answer

As of November 6, 2026, there are 481 natural marquise diamonds with G colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $13,690 NZD to $59,645 NZD, with a median of $26,388 NZD. Half of all listings fall between $8,440 NZD and $17,315 NZD per carat. Over the last 30 days the median price moved -3.2% and the number of listings moved +22.8%.

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 natural stones in the index: 2,177 USD per carat, -4.2% month on month. See the full index release

Figures come from current listings across more than 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

481

Lowest Price

$6,750 NZD

Highest Price

$121,285 NZD

Average Price

$31,161 NZD

Market Intelligence

Cross Retailer %

35.3%

Price Spread

67.8%

30-Day Price Trend

-3.2%

30-Day Supply Change

+22.8%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$7,355/ct

10th Percentile

$3,846

Median

$7,355

90th Percentile

$15,493

Score Distribution

481 diamonds scored across 4 quality tiers

Excellent

115 (23.9%)

Very Good

137 (28.5%)

Good

84 (17.5%)

Average

145 (30.1%)

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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