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

As of October 2026, 2.00 to 2.99ct F SI1 natural marquise diamonds typically cost $27,188 AUD to $70,427 AUD, with a median price of $33,252 AUD. There are currently 69 diamonds matching this specification available across retailers.

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

About 35% of these diamonds are available at multiple retailers, with an average price spread of 25%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct F SI1 Natural Marquise

Quick answer

As of October 2026, there are 69 natural marquise diamonds with F colour and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $27,188 AUD to $70,427 AUD, with a median of $33,252 AUD. At least 60 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 25%. Half of all listings fall between $14,522 AUD and $18,664 AUD per carat. The same specification in lab grown form lists at a median of about $757 AUD per carat. Over the last 30 days the median price moved -2.9% and the number of listings moved +24.4%.

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: October 2026

Available

Lowest Price

$16,773 AUD

Highest Price

$112,886 AUD

Average Price

$41,753 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

35.2%

Price Spread

25.1%

30-Day Price Trend

-2.9%

30-Day Supply Change

+24.4%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$11,583/ct

10th Percentile

$8,678

Median

$11,583

90th Percentile

$15,110

Score Distribution

190 diamonds scored across 4 quality tiers

Excellent

4 (2.1%)

Very Good

51 (26.8%)

Good

43 (22.6%)

Average

92 (48.4%)

Find Your Diamond

Search 69 F SI1 marquise diamonds and compare prices.

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Consider Instead

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

F SI2SI2 inclusions are not visible without magnification

Save 34%

Lab-Grown F SI1Same specifications, lab-grown origin

Save 95%

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