How much does a 5.00ct+ J SI2 natural heart diamond cost?

As of October 2026, 5.00ct+ J SI2 natural heart diamonds typically cost HK$299,008 HKD to HK$836,709 HKD, with a median price of HK$528,981 HKD. There are currently 19 diamonds matching this specification available across retailers.

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

Compare prices across retailers on Carat Hunter to see all your options.

5.00ct+ J SI2 Natural Heart

Quick answer

As of October 2026, there are 19 natural heart diamonds with J colour and SI2 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run HK$299,008 HKD to HK$836,709 HKD, with a median of HK$528,981 HKD.

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

HK$221,249 HKD

Highest Price

HK$1,653,089 HKD

Average Price

HK$583,959 HKD

Score Distribution

43 diamonds scored across 4 quality tiers

Excellent

4 (9.3%)

Very Good

7 (16.3%)

Good

6 (14.0%)

Average

26 (60.5%)

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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