How much does a 3.00 to 4.99ct F I1 natural round diamond cost?

As of October 2026, 3.00 to 4.99ct F I1 natural round diamonds typically cost $20,470 AUD to $90,881 AUD, with a median price of $55,668 AUD. There are currently 33 diamonds matching this specification available across retailers.

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

About 24% of these diamonds are available at multiple retailers, with an average price spread of 80%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct F I1 Natural Round

Quick answer

As of October 2026, there are 33 natural round diamonds with F colour and I1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $20,470 AUD to $90,881 AUD, with a median of $55,668 AUD. At least 27 retailers stock this exact specification, and 24% of the stones appear at more than one of them, with an average price spread of 80%. Half of all listings fall between $5,946 AUD and $13,841 AUD per carat. The same specification in lab grown form lists at a median of about $308 AUD per carat. Over the last 30 days the median price moved -3.5% and the number of listings moved +4.5%.

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

$12,845 AUD

Highest Price

$157,532 AUD

Average Price

$59,831 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

23.8%

Price Spread

80.0%

30-Day Price Trend

-3.5%

30-Day Supply Change

+4.5%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$6,932/ct

10th Percentile

$2,644

Median

$6,932

90th Percentile

$13,137

Score Distribution

128 diamonds scored across 4 quality tiers

Excellent

6 (4.7%)

Very Good

26 (20.3%)

Good

16 (12.5%)

Average

80 (62.5%)

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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