How much does a 1.00 to 1.49ct D SI2 natural heart diamond cost?

As of September 2026, 1.00 to 1.49ct D SI2 natural heart diamonds typically cost $2,124 SGD to $7,062 SGD, with a median price of $3,002 SGD. There are currently 428 diamonds matching this specification available across retailers.

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1.00 to 1.49ct D SI2 Natural Heart

Quick answer

As of September 2026, there are 428 natural heart diamonds with D colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $2,124 SGD to $7,062 SGD, with a median of $3,002 SGD. At least 45 retailers stock this exact specification. Half of all listings fall between $2,317 SGD and $3,429 SGD per carat. The same specification in lab grown form lists at a median of about $628 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

428

Lowest Price

$1,505 SGD

Highest Price

$15,724 SGD

Average Price

$3,842 SGD

Market Intelligence

Retailers Selling

Price Spread

40.8%

Price Range

Price per carat distribution across retailers

$2,149/ct

10th Percentile

$1,558

Median

$2,149

90th Percentile

$3,658

Score Distribution

428 diamonds scored across 4 quality tiers

Excellent

94 (22.0%)

Very Good

114 (26.6%)

Good

91 (21.3%)

Average

129 (30.1%)

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Consider Instead

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

Lab-Grown D SI2Same 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