How much does a 0.20 to 0.49ct F I1 natural marquise diamond cost?

As of November 2026, 0.20 to 0.49ct F I1 natural marquise diamonds typically cost $452 NZD to $1,510 NZD, with a median price of $883 NZD. There are currently 15 diamonds matching this specification available across retailers.

Where can I find the best price on a F I1 marquise diamond?

About 45% of these diamonds are available at multiple retailers, with an average price spread of 55%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct F I1 Natural Marquise

Quick answer

As of November 2026, there are 15 natural marquise diamonds with F colour and I1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $452 NZD to $1,510 NZD, with a median of $883 NZD. At least 12 retailers stock this exact specification, and 45% of the stones appear at more than one of them, with an average price spread of 55%. Half of all listings fall between $1,818 NZD and $3,069 NZD per carat.

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: November 2026

Available

Lowest Price

$321 NZD

Highest Price

$1,819 NZD

Average Price

$897 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

45.5%

Price Spread

54.8%

Price Range

Price per carat distribution across retailers

$1,286/ct

10th Percentile

$942

Median

$1,286

90th Percentile

$3,018

Score Distribution

74 diamonds scored across 4 quality tiers

Excellent

4 (5.4%)

Very Good

6 (8.1%)

Good

9 (12.2%)

Average

55 (74.3%)

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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