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

As of November 2026, 1.00 to 1.49ct D SI1 natural heart diamonds typically cost $3,095 NZD to $9,797 NZD, with a median price of $4,324 NZD. There are currently 236 diamonds matching this specification available across retailers.

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

About 40% of these diamonds are available at multiple retailers, with an average price spread of 54%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct D SI1 Natural Heart

Quick answer

As of November 2026, there are 236 natural heart diamonds with D colour and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $3,095 NZD to $9,797 NZD, with a median of $4,324 NZD. At least 63 retailers stock this exact specification, and 40% of the stones appear at more than one of them, with an average price spread of 54%. Half of all listings fall between $3,632 NZD and $6,014 NZD per carat. The same specification in lab grown form lists at a median of about $635 NZD per carat. Over the last 30 days the median price moved -2.3% and the number of listings moved +7.2%.

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

Caratlytics Diamond Price Index, September 2026: natural diamonds at 2,335 USD per carat and lab-grown at 443 USD per carat, a natural to lab ratio of 5.3 to 1. Heart natural stones in the index: 2,374 USD per carat, +9.8% 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

236

Lowest Price

$2,076 NZD

Highest Price

$22,143 NZD

Average Price

$5,532 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

40.0%

Price Spread

54.2%

30-Day Price Trend

-2.3%

30-Day Supply Change

+7.2%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$2,475/ct

10th Percentile

$1,798

Median

$2,475

90th Percentile

$4,685

Score Distribution

675 diamonds scored across 4 quality tiers

Excellent

148 (21.9%)

Very Good

131 (19.4%)

Good

157 (23.3%)

Average

239 (35.4%)

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Consider Instead

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

D SI2SI2 inclusions are not visible without magnification

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Lab-Grown D 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