How much does a 0.50 to 0.74ct F I1 natural marquise diamond cost?

As of November 2026, 0.50 to 0.74ct F I1 natural marquise diamonds typically cost $866 AUD to $1,975 AUD, with a median price of $1,321 AUD. There are currently 57 diamonds matching this specification available across retailers.

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

About 20% of these diamonds are available at multiple retailers, with an average price spread of 34%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct F I1 Natural Marquise

Quick answer

As of November 2026, there are 57 natural marquise diamonds with F colour and I1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $866 AUD to $1,975 AUD, with a median of $1,321 AUD. At least 26 retailers stock this exact specification, and 20% of the stones appear at more than one of them, with an average price spread of 34%. Half of all listings fall between $1,791 AUD and $2,530 AUD per carat. The same specification in lab grown form lists at a median of about $1,727 AUD per carat. Over the last 30 days the median price moved -1.6% and the number of listings moved +1.0%.

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 100 retailers and refresh daily. The index is a monthly release.

Last updated: November 2026

Available

Lowest Price

$396 AUD

Highest Price

$3,437 AUD

Average Price

$1,404 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

19.8%

Price Spread

34.2%

30-Day Price Trend

-1.6%

30-Day Supply Change

+1.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,515/ct

10th Percentile

$1,055

Median

$1,515

90th Percentile

$2,266

Score Distribution

150 diamonds scored across 4 quality tiers

Excellent

10 (6.7%)

Very Good

29 (19.3%)

Good

24 (16.0%)

Average

87 (58.0%)

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Consider Instead

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

Lab-Grown F I1Same 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