How much does a 5.00ct+ F I1 natural marquise diamond cost?

As of September 2026, 5.00ct+ F I1 natural marquise diamonds typically cost $45,299 USD to $55,265 USD, with a median price of $50,282 USD. There are currently 2 diamonds matching this specification available across retailers.

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

About 75% of these diamonds are available at multiple retailers, with an average price spread of 21%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ F I1 Natural Marquise

Quick answer

As of September 2026, there are 2 natural marquise diamonds with F color and I1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $45,299 USD to $55,265 USD, with a median of $50,282 USD. At least 11 retailers stock this exact specification, and 75% of the stones appear at more than one of them, with an average price spread of 21%. Half of all listings fall between $7,242 USD and $8,972 USD per carat.

Three of the best scored stones at this specification right now:

6.08ct Marquise F I1, GIA, score 72 of 100, from $44,053 USD

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

Lowest Price

$44,053 USD

Highest Price

$58,975 USD

Average Price

$50,282 USD

Market Intelligence

Retailers Selling

Cross Retailer %

75.0%

Price Spread

21.1%

Price Range

Price per carat distribution across retailers

$8,216/ct

10th Percentile

$6,122

Median

$8,216

90th Percentile

$10,171

Score Distribution

2 diamonds scored across 2 quality tiers

Very Good

1 (50.0%)

Average

1 (50.0%)

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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