How much does a 1.00 to 1.49ct H SI1 natural heart diamond cost?

As of September 2026, 1.00 to 1.49ct H SI1 natural heart diamonds typically cost $1,431 USD to $4,476 USD, with a median price of $2,202 USD. There are currently 1,024 diamonds matching this specification available across retailers.

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

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1.00 to 1.49ct H SI1 Natural Heart

Quick answer

As of September 2026, there are 1,024 natural heart diamonds with H color and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,431 USD to $4,476 USD, with a median of $2,202 USD. At least 58 retailers stock this exact specification. Half of all listings fall between $1,669 USD and $2,537 USD per carat. The same specification in lab grown form lists at a median of about $1,388 USD 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

1,024

Lowest Price

$398 USD

Highest Price

$9,970 USD

Average Price

$2,608 USD

Market Intelligence

Retailers Selling

Price Spread

43.4%

Price Range

Price per carat distribution across retailers

$2,001/ct

10th Percentile

$1,439

Median

$2,001

90th Percentile

$3,216

Score Distribution

1.0K diamonds scored across 4 quality tiers

Excellent

98 (9.6%)

Very Good

256 (25.0%)

Good

342 (33.4%)

Average

328 (32.0%)

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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

Save 10%

Lab-Grown H SI1Same specifications, lab-grown origin

Save 33%

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