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

As of November 2026, 1.00 to 1.49ct H SI1 natural heart diamonds typically cost $2,633 NZD to $8,594 NZD, with a median price of $4,173 NZD. There are currently 424 diamonds matching this specification available across retailers.

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

About 45% of these diamonds are available at multiple retailers, with an average price spread of 57%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct H SI1 Natural Heart

Quick answer

As of November 2026, there are 424 natural heart diamonds with H colour and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $2,633 NZD to $8,594 NZD, with a median of $4,173 NZD. At least 65 retailers stock this exact specification, and 45% of the stones appear at more than one of them, with an average price spread of 57%. Half of all listings fall between $2,953 NZD and $5,108 NZD per carat. The same specification in lab grown form lists at a median of about $1,430 NZD per carat. Over the last 30 days the median price moved -0.3% and the number of listings moved +13.4%.

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

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Heart natural stones in the index: 2,289 USD per carat, -3.7% 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: November 2026

Available

424

Lowest Price

$1,727 NZD

Highest Price

$16,218 NZD

Average Price

$4,967 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

44.9%

Price Spread

57.5%

30-Day Price Trend

-0.3%

30-Day Supply Change

+13.4%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$2,110/ct

10th Percentile

$1,425

Median

$2,110

90th Percentile

$3,991

Score Distribution

976 diamonds scored across 4 quality tiers

Excellent

165 (16.9%)

Very Good

192 (19.7%)

Good

187 (19.2%)

Average

432 (44.3%)

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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 11%

Lab-Grown H SI1Same specifications, lab-grown origin

Save 45%

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