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 HK$222,739 HKD to HK$928,785 HKD, with a median price of HK$437,249 HKD. There are currently 42 diamonds matching this specification available across retailers.

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

About 34% of these diamonds are available at multiple retailers, with an average price spread of 58%. 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 42 natural round diamonds with I colour and IF clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run HK$222,739 HKD to HK$928,785 HKD, with a median of HK$437,249 HKD. At least 46 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 58%. Half of all listings fall between HK$92,925 HKD and HK$165,769 HKD per carat. The same specification in lab grown form lists at a median of about HK$10,123 HKD per carat. Over the last 30 days the median price moved -4.7% and the number of listings moved +0.5%.

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

HK$193,987 HKD

Highest Price

HK$1,576,333 HKD

Average Price

HK$511,869 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

33.9%

Price Spread

58.2%

30-Day Price Trend

-4.7%

30-Day Supply Change

+0.5%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$15,956/ct

10th Percentile

$9,968

Median

$15,956

90th Percentile

$27,288

Score Distribution

99 diamonds scored across 4 quality tiers

Excellent

36 (36.4%)

Very Good

20 (20.2%)

Good

8 (8.1%)

Average

35 (35.4%)

Find Your Diamond

Search 42 I IF round diamonds and compare prices.

Search Diamonds

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

Save 30%

Lab-Grown I IFSame specifications, lab-grown origin

Save 97%

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