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

As of October 2026, 3.00 to 4.99ct I IF natural round diamonds typically cost $28,329 USD to $117,879 USD, with a median price of $55,119 USD. There are currently 48 diamonds matching this specification available across retailers.

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

About 32% of these diamonds are available at multiple retailers, with an average price spread of 60%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct I IF Natural Round

Quick answer

As of October 2026, there are 48 natural round diamonds with I color and IF clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $28,329 USD to $117,879 USD, with a median of $55,119 USD. At least 47 retailers stock this exact specification, and 32% of the stones appear at more than one of them, with an average price spread of 60%. Half of all listings fall between $11,827 USD and $21,038 USD per carat. The same specification in lab grown form lists at a median of about $1,286 USD per carat. Over the last 30 days the median price moved -6.8% and the number of listings moved +1.6%.

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. Round natural stones in the index: 2,248 USD per carat, +7.6% 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

$24,723 USD

Highest Price

$200,899 USD

Average Price

$64,921 USD

Market Intelligence

Retailers Selling

Cross Retailer %

32.1%

Price Spread

59.7%

30-Day Price Trend

-6.8%

30-Day Supply Change

+1.6%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$15,425/ct

10th Percentile

$9,945

Median

$15,425

90th Percentile

$27,063

Score Distribution

125 diamonds scored across 4 quality tiers

Excellent

42 (33.6%)

Very Good

28 (22.4%)

Good

18 (14.4%)

Average

37 (29.6%)

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Consider Instead

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

J IFJ colour is visually identical to I to the naked eye

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Lab-Grown I IFSame 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