How much does a 0.50 to 0.74ct D SI2 natural heart diamond cost?

As of October 2026, 0.50 to 0.74ct D SI2 natural heart diamonds typically cost $1,029 NZD to $3,033 NZD, with a median price of $1,572 NZD. There are currently 96 diamonds matching this specification available across retailers.

Where can I find the best price on a D SI2 heart diamond?

About 29% of these diamonds are available at multiple retailers, with an average price spread of 53%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct D SI2 Natural Heart

Quick answer

As of October 2026, there are 96 natural heart diamonds with D colour and SI2 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $1,029 NZD to $3,033 NZD, with a median of $1,572 NZD. At least 50 retailers stock this exact specification, and 29% of the stones appear at more than one of them, with an average price spread of 53%. Half of all listings fall between $1,863 NZD and $3,047 NZD per carat. Over the last 30 days the median price moved -2.1% and the number of listings moved -8.9%.

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: October 2026

Available

Lowest Price

$710 NZD

Highest Price

$5,744 NZD

Average Price

$1,849 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

29.2%

Price Spread

52.5%

30-Day Price Trend

-2.1%

30-Day Supply Change

-8.9%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,271/ct

10th Percentile

$869

Median

$1,271

90th Percentile

$2,516

Score Distribution

315 diamonds scored across 4 quality tiers

Excellent

39 (12.4%)

Very Good

43 (13.7%)

Good

68 (21.6%)

Average

165 (52.4%)

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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