How much does a 3.00 to 4.99ct J SI2 natural heart diamond cost?

As of October 2026, 3.00 to 4.99ct J SI2 natural heart diamonds typically cost $18,236 AUD to $125,835 AUD, with a median price of $34,389 AUD. There are currently 66 diamonds matching this specification available across retailers.

Where can I find the best price on a J SI2 heart diamond?

About 38% of these diamonds are available at multiple retailers, with an average price spread of 23%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct J SI2 Natural Heart

Quick answer

As of October 2026, there are 66 natural heart diamonds with J colour and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $18,236 AUD to $125,835 AUD, with a median of $34,389 AUD. At least 23 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 23%. Half of all listings fall between $5,563 AUD and $7,129 AUD per carat. Over the last 30 days the median price moved -2.5% and the number of listings moved +11.0%.

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. Heart natural stones in the index: 2,374 USD per carat, +9.8% 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: October 2026

Available

Lowest Price

$11,628 AUD

Highest Price

$148,313 AUD

Average Price

$50,069 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

38.1%

Price Spread

23.1%

30-Day Price Trend

-2.5%

30-Day Supply Change

+11.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$4,758/ct

10th Percentile

$3,084

Median

$4,758

90th Percentile

$5,132

Score Distribution

184 diamonds scored across 4 quality tiers

Excellent

24 (13.0%)

Very Good

41 (22.3%)

Good

30 (16.3%)

Average

89 (48.4%)

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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