How much does a 5.00ct+ H SI1 natural heart diamond cost?

As of September 2026, 5.00ct+ H SI1 natural heart diamonds typically cost $83,591 SGD to $242,454 SGD, with a median price of $121,361 SGD. There are currently 30 diamonds matching this specification available across retailers.

Where can I find the best price on a H SI1 heart diamond?

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5.00ct+ H SI1 Natural Heart

Quick answer

As of September 2026, there are 30 natural heart diamonds with H colour and SI1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $83,591 SGD to $242,454 SGD, with a median of $121,361 SGD. At least 5 retailers stock this exact specification. Half of all listings fall between $16,372 SGD and $21,871 SGD per carat. The same specification in lab grown form lists at a median of about $677 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

$55,609 SGD

Highest Price

$337,059 SGD

Average Price

$139,626 SGD

Market Intelligence

Retailers Selling

Price Spread

30.6%

Price Range

Price per carat distribution across retailers

$14,099/ct

10th Percentile

$9,818

Median

$14,099

90th Percentile

$21,950

Score Distribution

30 diamonds scored across 4 quality tiers

Excellent

3 (10.0%)

Very Good

9 (30.0%)

Good

7 (23.3%)

Average

11 (36.7%)

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

H SI2SI2 inclusions are not visible without magnification

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Lab-Grown H SI1Same specifications, lab-grown origin

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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