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

As of September 2026, 5.00ct+ J SI2 natural heart diamonds typically cost $48,413 SGD to $153,984 SGD, with a median price of $76,563 SGD. There are currently 41 diamonds matching this specification available across retailers.

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

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5.00ct+ J SI2 Natural Heart

Quick answer

As of September 2026, there are 41 natural heart diamonds with J colour and SI2 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $48,413 SGD to $153,984 SGD, with a median of $76,563 SGD. At least 8 retailers stock this exact specification. Half of all listings fall between $23,620 SGD and $30,187 SGD per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Heart natural stones in the index: 2,261 USD per carat, +1.7% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

Lowest Price

$37,729 SGD

Highest Price

$284,173 SGD

Average Price

$89,204 SGD

Market Intelligence

Retailers Selling

Price Spread

25.3%

Price Range

Price per carat distribution across retailers

$19,483/ct

10th Percentile

$15,699

Median

$19,483

90th Percentile

$24,654

Score Distribution

41 diamonds scored across 4 quality tiers

Excellent

2 (4.9%)

Very Good

8 (19.5%)

Good

13 (31.7%)

Average

18 (43.9%)

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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