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

As of October 2026, 3.00 to 4.99ct J I1 natural round diamonds typically cost $31,651 NZD to $101,474 NZD, with a median price of $59,082 NZD. There are currently 50 diamonds matching this specification available across retailers.

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

About 15% of these diamonds are available at multiple retailers, with an average price spread of 49%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct J I1 Natural Round

Quick answer

As of October 2026, there are 50 natural round diamonds with J colour and I1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $31,651 NZD to $101,474 NZD, with a median of $59,082 NZD. At least 25 retailers stock this exact specification, and 15% of the stones appear at more than one of them, with an average price spread of 49%. Half of all listings fall between $8,866 NZD and $15,085 NZD per carat. Over the last 30 days the median price moved -1.0% and the number of listings moved -1.8%.

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

$9,995 NZD

Highest Price

$119,502 NZD

Average Price

$62,931 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

14.6%

Price Spread

49.0%

30-Day Price Trend

-1.0%

30-Day Supply Change

-1.8%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$7,150/ct

10th Percentile

$3,364

Median

$7,150

90th Percentile

$9,543

Score Distribution

250 diamonds scored across 4 quality tiers

Excellent

9 (3.6%)

Very Good

30 (12.0%)

Good

21 (8.4%)

Average

190 (76.0%)

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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