How much does a 3.00 to 4.99ct I IF natural marquise diamond cost?

As of November 2026, 3.00 to 4.99ct I IF natural marquise diamonds typically cost $31,052 USD to $87,294 USD, with a median price of $49,803 USD. There are currently 4 diamonds matching this specification available across retailers.

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

About 42% of these diamonds are available at multiple retailers, with an average price spread of 18%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct I IF Natural Marquise

Quick answer

As of November 2026, there are 4 natural marquise diamonds with I color and IF clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $31,052 USD to $87,294 USD, with a median of $49,803 USD. At least 16 retailers stock this exact specification, and 42% of the stones appear at more than one of them, with an average price spread of 18%. Half of all listings fall between $13,891 USD and $16,811 USD per carat. The same specification in lab grown form lists at a median of about $1,564 USD 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

$24,861 USD

Highest Price

$174,496 USD

Average Price

$56,514 USD

Market Intelligence

Retailers Selling

Cross Retailer %

41.7%

Price Spread

18.1%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$16,130/ct

10th Percentile

$12,928

Median

$16,130

90th Percentile

$18,995

Score Distribution

8 diamonds scored across 3 quality tiers

Excellent

3 (37.5%)

Very Good

1 (12.5%)

Good

4 (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